WormMine: LifeStage WBls:0000003

• Definition: The whole period of embryogenesis in the nematode Caenorhabditis elegans, from the formation of an egg until hatching.
• Primary Identifier: WBls:0000003
• Public Name: embryo Ce

1346 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
Epidermal layer.	hypodermis	epidermis	WBbt:0005733
Pharyngeal sensory-motorneurons	m3R	lineage name: ABaraappppp	WBbt:0004469
Ring interneuron	URXL	lineage name: ABplaaaaappp	WBbt:0004928
Ring interneuron	URXR	lineage name: ABarpapaappp	WBbt:0004926
Pharyngeal sensory-motorneurons	m3L	lineage name: ABaraapappp	WBbt:0004471
Neuron class of one interneuron, projects along ventral cord to ring.	PVT	lineage name: ABplpappppa	WBbt:0004070
gland cell of the secretory-excretory system, sends processes to ring, opens into excretory duct.	excretory gland cell	exc gl	WBbt:0005776
Herm. specific motor neurons (die in male embryo), innervate vulval muscles, serotonergic	HSNL	lineage name: ABplapppappa	WBbt:0004758
Herm. specific motor neurons (die in male embryo), innervate vulval muscles, serotonergic	HSNR	lineage name: ABprapppappa	WBbt:0004757
Amphid interneuron	AIYL	lineage name: ABplpapaaap	WBbt:0003963
Amphid interneuron	AIYR	lineage name: ABprpapaaap	WBbt:0003961
one member of Amphid neurons, single ciliated endings, probably chemo-sensory; project into ring via commissure from ventral ganglion, make diverse synaptic connections in ring neuropil	ASEL	lineage name: ABalppppppaa	WBbt:0003904
one member of Amphid neurons, single ciliated endings, probably chemo-sensory; project into ring via commissure from ventral ganglion, make diverse synaptic connections in ring neuropil	ASER	lineage name: ABpraaapppaa	WBbt:0003903
Neuron, ciliated ending in head, no supporting cells, associated with ILso	BAGL	lineage name: ABalppappap	WBbt:0003824
Neuron class of one pharyngeal interneuron, posterior sensory.	I5 neuron	I5	WBbt:0004740
one member of Amphid neurons, single ciliated endings, probably chemo-sensory; project into ring via commissure from ventral ganglion, make diverse synaptic connections in ring neuropil	ASGL	lineage name: ABplaapapap	WBbt:0003892
one member of Amphid neurons, single ciliated endings, probably chemo-sensory; project into ring via commissure from ventral ganglion, make diverse synaptic connections in ring neuropil	ASGR	lineage name: ABpraapapap	WBbt:0003891
Neuron class of one pharyngeal motorneuron.	M5 neuron	lineage name: MSpaaapap	WBbt:0004465
Neuron, ciliated ending in head, no supporting cells, associated with ILso	BAGR	lineage name: ABarappppap	WBbt:0003823
H-shaped cell associated with the excretory system, largest cell in C. elegans.	excretory cell	excretory canal cell	WBbt:0005812
Inner labial neuron	IL1VR	lineage name: ABarapppppaa	WBbt:0004547
Inner labial neuron	IL1DR	lineage name: ABalappppaaa	WBbt:0004737
Inner labial neuron	IL1L	lineage name: ABalapaappaa	WBbt:0004553
Inner labial neuron	IL1R	lineage name: ABalaappppaa	WBbt:0004551
Inner labial neuron	IL1VL	lineage name: ABalppapppaa	WBbt:0004549
Inner labial neuron	IL1DL	lineage name: ABalapappaaa	WBbt:0004738
Amphid socket cell, left	AMsoL	lineage name: ABplpaapapa	WBbt:0003931
Amphid socket cell, right	AMsoR	lineage name: ABprpaapapa	WBbt:0003929
Amphid neuron, prob. chemosensory	ADFL	lineage name: ABalpppppaa	WBbt:0004003
Amphid neuron, prob. chemosensory	ADFR	lineage name: ABpraaappaa	WBbt:0003999

1 Contained In

Remark	Definition	Other Name	Public Name	Primary Identifier
	The whole period of embryogenesis in a nematode, from the formation of an egg until hatching.		nematode embryo	WBls:0000102

200 Expression Clusters

Regulated By Treatment	Description	Algorithm	Primary Identifier
Osmotic stress	Transcripts that showed significantly altered expression with 500 mM salt (NaCl) vs 100 mM salt when food was present	DESeq(version 1.10.1), FDR < 0.05.	WBPaper00050726:OsmoticStress_regulated_Food
Osmotic stress	Transcripts that showed significantly altered expression with 500 mM salt (NaCl) vs 100 mM salt when no food was present	DESeq(version 1.10.1), FDR < 0.05.	WBPaper00050726:OsmoticStress_regulated_NoFood
	Maternal class (M): genes that are called present in at least one of the three PC6 replicates.	A modified Welch F statistic was used for ANOVA. For each gene, regressed error estimates were substituted for observed error estimates. The substitution is justified by the lack of consistency among the most and least variable genes at each time point. Regressed error estimates were abundance-dependent pooled error estimates that represented a median error estimate from a window of genes of similar abundance to the gene of interest. A randomization test was used to compute the probability Pg of the observed F statistic for gene g under the null hypothesis that developmental time had no effect on expression. P-values were not corrected for multiple testing.	[cgc5767]:expression_class_M
	Transcripts that showed significantly increased expression in rrf-3(pk1426) comparing to in N2 at embryo stage.	DESeq2v 1.18.1, fold change > 1.5, adjusted p-value < 0.01.	WBPaper00056169:rrf-3(pk1426)_upregulated_embryo
	Strictly maternal class (SM): genes that are the subset of maternal genes that are not also classified as embryonic.	A modified Welch F statistic was used for ANOVA. For each gene, regressed error estimates were substituted for observed error estimates. The substitution is justified by the lack of consistency among the most and least variable genes at each time point. Regressed error estimates were abundance-dependent pooled error estimates that represented a median error estimate from a window of genes of similar abundance to the gene of interest. A randomization test was used to compute the probability Pg of the observed F statistic for gene g under the null hypothesis that developmental time had no effect on expression. P-values were not corrected for multiple testing.	[cgc5767]:expression_class_SM
	Transcripts that showed significantly increased expression in adr-1(tm668) and adr-1(gv6) comparing to in N2 at embryo stage.	DESeq FDR <= 0.05	WBPaper00056617:adr-1_upregulated_embryo_transcript
	Transcripts that showed significantly increased expression in H3.3 null mutant animals (FAS43 [his-69&his-70(uge44) III; his-72(tm2066) III; his-74(uge18) V; his-71(ok2289) X]) comparing to in N2 animals at embryo stage.	Differentially expressed genes were estimated using a General Linear Model approach, negative binomial distribution, and a quasi-likelihood F-test. Genes with a P-value < 0.05 and fold change > 1 were considered significant.	WBPaper00054191:H3.3(null)_embryo_upregulated
	Transcripts that showed significantly increased expression in ngn-1(ok2200) embryos comparing to in N2.	DESeq2 ver.3.4.1	WBPaper00059537:ngn-1(ok2200)_upregulated
	Transcripts that showed significantly increased expression in wdr-23(mac32) embryos from parents fed with E. coliHB101, comparing to N2 embryos parents fed with E. coli HB101.	DESeq2, Fold Change > 2 or < 0.5.	WBPaper00059566:wdr-23(mac32)_upregulated
	Transcripts that showed significantly decreased expression in set-2(tm1630) animals at embryo stage, comparing to in N2 animals.	DESeq2 (v2.1.8.3) was used to determine DE genes and to generate principal component and scatter plots. DE genes with FDR < 0.05 were analysed using g:Profiler with Bonferroni correction.	WBPaper00060014:set-2(tm1630)_downregulated
Starvation	Transcripts that showed significantly altered expression by starvation with 100 mM salt (NaCl)	DESeq(version 1.10.1), FDR < 0.05.	WBPaper00050726:starvation_regulated_LowSalt
	Transcripts that showed significantly increased expression in cfp-1(tm6369) comparing to in N2 at early embryo stage.	DESeq2, FDR < 0.05	WBPaper00058691:cfp-1(tm6369)_upregulated
	Transcripts down regulated in hpl-2(tm1489) embryo comparing to N2 in tiling array analysis.	Oligos from the tiling array were mapped to chromosome coordinates of the exons from Wormbase WS180. Any oligo that mapped to a gene on both the Watson and Crick strands was excluded. The remaining oligos were then grouped together (perfect match and mismatch) into probe sets and written out into an Affymetrix CDF file. The CDF file was converted into an R-package and loaded into R. The expression values were calculated using the justRMA function from Bioconductor. This used a Benjamini and Hochberg false discovery rate correction.	WBPaper00040560:hpl-2_embryo_downregulated
	Transcripts that showed significantly increased expression in set-2(tm1630) animals at embryo stage, comparing to in N2 animals.	DESeq2 (v2.1.8.3) was used to determine DE genes and to generate principal component and scatter plots. DE genes with FDR < 0.05 were analysed using g:Profiler with Bonferroni correction.	WBPaper00060014:set-2(tm1630)_upregulated
	Transcripts that showed significantly increased expression in sin-3(tm1276) comparing to in N2 at early embryo stage.	DESeq2, FDR < 0.05	WBPaper00058691:sin-3(tm1276)_upregulated
	Transcripts that showed significantly increased expression in set-2(zr2012) animals at embryo stage, comparing to in N2 animals.	DESeq2 (v2.1.8.3) was used to determine DE genes and to generate principal component and scatter plots. DE genes with FDR < 0.05 were analysed using g:Profiler with Bonferroni correction.	WBPaper00060014:set-2(zr2012)_upregulated
	Genes expressed in N2.	Expressed transcripts were identified on the basis of a Present call in 3 out of 4 N2 experiments as determined by Affymetrix MAS 5.0.	WBPaper00025141:N2_Expressed_Genes
	Embryonic (E) subclasses are based on the earliest significant increase(abbreviated pi for primary increase).	A modified Welch F statistic was used for ANOVA. For each gene, regressed error estimates were substituted for observed error estimates. The substitution is justified by the lack of consistency among the most and least variable genes at each time point. Regressed error estimates were abundance-dependent pooled error estimates that represented a median error estimate from a window of genes of similar abundance to the gene of interest. A randomization test was used to compute the probability Pg of the observed F statistic for gene g under the null hypothesis that developmental time had no effect on expression. P-values were not corrected for multiple testing.	[cgc5767]:expression_class_E_pi(122_min)
	Genes uniquely expressed in endoderm, according to RNAseq studies on blastomere (with isolated AB, MS, E, C, D founder cells dividing in vitro) time course and whole embryo time course.	Germ layers were assigned by correlating the average expression with germ-layer-specific patterns with a cutoff of 0.6 correlation with the following idealized vectors: endoderm = [00100]; ectoderm = [10000]; mesoderm = [01011], where the order is AB, MS, E, C and P3. Germ-layer genes were defined according to the sum of the genes identified by the clusters and are indicated in Fig. 2b. Authors further filtered the germ-layer gene sets by keeping only those genes whose expression was partitioned across the germ layers such that at least two-thirds of the expression was in that germ layer.	WBPaper00046121:endoderm_unique
	Strictly embryonic class (SE): genes that are the subset of embryonic genes that are not also classified as maternal.	A modified Welch F statistic was used for ANOVA. For each gene, regressed error estimates were substituted for observed error estimates. The substitution is justified by the lack of consistency among the most and least variable genes at each time point. Regressed error estimates were abundance-dependent pooled error estimates that represented a median error estimate from a window of genes of similar abundance to the gene of interest. A randomization test was used to compute the probability Pg of the observed F statistic for gene g under the null hypothesis that developmental time had no effect on expression. P-values were not corrected for multiple testing.	[cgc5767]:expression_class_SE
	Strictly embryonic (SE) subclasses are based on the earliest significant increase(abbreviated pi for primary increase).	A modified Welch F statistic was used for ANOVA. For each gene, regressed error estimates were substituted for observed error estimates. The substitution is justified by the lack of consistency among the most and least variable genes at each time point. Regressed error estimates were abundance-dependent pooled error estimates that represented a median error estimate from a window of genes of similar abundance to the gene of interest. A randomization test was used to compute the probability Pg of the observed F statistic for gene g under the null hypothesis that developmental time had no effect on expression. P-values were not corrected for multiple testing.	[cgc5767]:expression_class_SE_pi(122_min)
heat-shock hlh-1	Genes enriched in HLH-1 heat shock dataset.	A two-class unpaired analysis was performed to identify genes that are elevated 1.7-fold or greater when compared with the reference for each dataset, at a false discovery rate of 1.8% or less for M0 and 1.2% or less for the M24 datasets.	WBPaper00031003:hlh_1_enriched
	Genes significantly enriched (> 2x, FDR < 5%) in a particular cell-type versus a reference sample of all cells at the same stage.	A Mann-Whitney U test with an empirical background model and FDR correction for multiple testing was used to detect expressed transcripts (Benjamini and Hochberg 1995). Genes and TARs with an FDR <= 0.05 were reported as expressed above background. Authors detected differentially expressed transcripts using a method based on linear models. Genes and TARs were called differentially expressed if the FDR was <= 0.05 and the fold change (FC) >= 2.0. To more strictly correct for potential false-positives resulting from multiple sample comparisons, authors divided individual FDR estimates by the number of samplesor sample comparisons, respectively. This resulted in an adjusted FDR of 1.3 * 0.0001 for expression above background and of 7.4 * 0.0001 for differential expression. Authors called genes selectively enriched in a given tissue if they met the following requirements: (1) enriched expression in a given tissue (FDR <= 0.05 and FC >= 2.0), (2) fold change versus reference among the upper 40% of the positive FC range observed for this gene across all tissues, and (3) fold-change entropy among the lower 40% of the distribution observed for all genes.	WBPaper00037950:intestine_embryo_enriched
	Embryonic class (E): genes that significantly increase in abundance at some point during embryogenesis.	A modified Welch F statistic was used for ANOVA. For each gene, regressed error estimates were substituted for observed error estimates. The substitution is justified by the lack of consistency among the most and least variable genes at each time point. Regressed error estimates were abundance-dependent pooled error estimates that represented a median error estimate from a window of genes of similar abundance to the gene of interest. A randomization test was used to compute the probability Pg of the observed F statistic for gene g under the null hypothesis that developmental time had no effect on expression. P-values were not corrected for multiple testing.	[cgc5767]:expression_class_E
	Embryonic A-class motor neuron enriched genes.	A two-class unpaired analysis of the data was performed to identify genes that differ by >= 1.5-fold from the reference at a FDR of <1% for the larval pan-neural, embryonic pan-neural, and larval A-class motor neuron datasets.	WBPaper00030839:Embryo_A_Class
	Genes depleted in muscle cells (24hr muscle dataset). Dissociated myo-3::GFP embryos were cultured for 24 hours before FACS sorting.	A two-class unpaired analysis was performed to identify genes that are elevated 1.7-fold or greater when compared with the reference for each dataset, at a false discovery rate of 1.8% or less for M0 and 1.2% or less for the M24 datasets.	WBPaper00031003:24hr_muscle_depleted
	Total muscle depleted genes (complete list of non-overlapping genes from the 0hr and 24hr muscle depleted datasets).	A two-class unpaired analysis was performed to identify genes that are elevated 1.7-fold or greater when compared with the reference for each dataset, at a false discovery rate of 1.8% or less for M0 and 1.2% or less for the M24 datasets.	WBPaper00031003:total_muscle_depleted
	Genes with increased expression in tbx-2(bx59) comparing to N2.	The limma package was used to calculate differential expression using the limma linear model fit, eBayes smoothing of standard errors, and Benjamini-hochberg(Bh) multiple test correction with a false discovery rate of 5%.	WBPaper00042274:tbx-2(bx59)_upregulated
	Expressed transcripts enriched in embryonic motor neurons (identified by unc-4::GFP expressing cells).	Comparisons of RMA normalized intensities for unc-4::GFP vs reference cells were statistically analyzed using Significance Analysis of Microarrays software (SAM, Stanford). A two-class unpaired analysis of the data was performed to identify genes that differ by 1.7-fold from the wildtype reference at a False Discovery Rate (FDR) of 1%. These genes were considered significantly enriched.	WBPaper00025141:unc-4::GFP_Enriched_Genes
	Genes expressed in embryonic motor neurons (identified by unc-4::GFP expressing cells).	Genes called Present by MAS 5.0 in 2 out of 3 unc-4::GFP hybridizations.	WBPaper00025141:unc-4::GFP_Expressed_Genes

1673 Expression Patterns

• Primary Identifier: Expr4890
• Remark: Picture: Fig 5.
• Pattern: Several globin genes (C06E4.7, C09H10.8, C36E8.2, C52A11.2, F52A8.4, R01E6.6, R13A1.8, R90.5, and W01C9.5) are similarly upregulated in L3 and dauers relative to young adults, although some reach significance in dauers only. Many genes exhibited more than 2- fold upregulation but didn't reach statistical significance because strong upregulation was only seen in 2 biological replicates, A significant downregulation in L3 stage relative to young adults was observed for C26C6.7, T22C1.2 and ZK637.13. A similar trend was seen in dauers. C26C6.7 was the only globin which exressed at a significantly higher level in dauers relative to L3. Quantitative real-time RT-PCR experiments were done to compare the relative bundance of all 33 globins in wild type adults. Results demonstrate T22C1.2 and ZK637.13 are expressed at substantially higher levels. The difference with the other globins ranges within 1-3 orders of magnitude.

• Primary Identifier: Expr4874
• Remark: Picture: Figure 4D, 4E. nfyb-1 and nfyc-1 displayed identical expression patterns.
• Pattern: nfyb-1 was expressed in many cells in the developing embryo. At the larval stages, the expression level of nfyb-1 was reduced in most somatic cells except in some head neurons and in the developing hermaphrodite vulva and male tail.
• Subcellular Localization: NFYB-1 was localized in both the nucleus and the cytoplasm.

• Primary Identifier: Expr4875
• Remark: Picture: Figure 4D, 4E. nfyb-1 and nfyc-1 displayed identical expression patterns.
• Pattern: nfyc-1 was expressed in many cells in the developing embryo. At the larval stages, the expression level of nfyc-1 was reduced in most somatic cells except in some head neurons and in the developing hermaphrodite vulva and male tail.
• Subcellular Localization: NFYC-1 was localized in both the nucleus and the cytoplasm.

• Primary Identifier: Expr4876
• Remark: Picture: Figure 4H, 4I.
• Pattern: The expression of nfya-2 was restricted to few tissues, including the spermatheca, some neurons in the head and other body regions. Notably, it was highly expressed in intestine cells at all developmental stages.
• Subcellular Localization: NFYA-2 localized to the nucleus.

• Primary Identifier: Expr4870
• Pattern: A-class motor neuron: expressed in embryo; enriched in larva (1.6). Neuronal expression include: All ventral cord motor neurons, head neurons, touch neurons. Also expressed in other cells: Intestine, anal depressor, head muscle. Pan-neuronal: expressed in embryo and larva.

• Primary Identifier: Expr4873
• Remark: Picture: Figure 4A, B, C.
• Pattern: NFYA-1 was localized to the nucleus and was ubiquitously expressed in all nuclei at all developmental stages. In larvae and adult animals, strong expression of nfya-1 was observed in the head ganglia neurons and also in the developing hermaphrodite vulva and mail tail, while its expression was lower in most somatic cells.
• Subcellular Localization: NFYA-1 was localized to the nucleus.

• Primary Identifier: Expr4863
• Pattern: A-class motor neuron: enriched in embryo (3.0) and larva (2.8). Neuronal expression include: Bright in anterior ventral cord neurons, weak and mosaic in posterior ventral cord. Also expressed in other cells: Pharyngeal/intestinal valves, hypodermis. Pan-neuronal: expressed in embryo; enriched in larva (1.8).

• Primary Identifier: Expr4864
• Pattern: A-class motor neuron: enriched in embryo (2.0) and larva (2.1). Neuronal expression include: DA, DB, VA, VB, DD, VD, head neurons. Also expressed in other cells: Pharyngeal muscle. Pan-neuronal: enriched in embryo (1.7) and larva (3.5).

• Primary Identifier: Expr4865
• Pattern: A-class motor neuron: enriched in embryo (1.8) and larva (1.8). Neuronal expression include: DA, DB, DD, VA, VB, VD, AS, head neurons. Also expressed in other cells: Head muscle. Pan-neuronal: enriched in embryo (1.8) and larva (1.5).

• Primary Identifier: Expr4866
• Pattern: A-class motor neuron: enriched in embryo (2.1) and larva (1.9). Neuronal expression include: DA, DB, VA, VB. Pan-neuronal: enriched in embryo (1.9) and larva (2.2).

• Primary Identifier: Expr4867
• Pattern: A-class motor neuron: enriched in embryo (5.3) and larva (3.7). Neuronal expression include: DA, DB, VA, VB, AS, head neurons. Also expressed in other cells: Body muscle, intestine. Pan-neuronal: enriched in embryo (3.9) and larva (8.3).

• Primary Identifier: Expr4868
• Pattern: A-class motor neuron: enriched in embryo (5.1) and larva (1.7). Neuronal expression include: DA, DB, VA, VB, VD. Also expressed in other cells: Intestine, hypodermis. Pan-neuronal: enriched in embryo (1.9) and larva (2.7).

• Primary Identifier: Expr4869
• Pattern: A-class motor neuron: enriched in embryo (3.6) and larva (3.1). Neuronal expression include: DA, DB, VA, VB, VC, touch neurons, head and tail neurons. Pan-neuronal: enriched in embryo (2.3) and larva (4.0).

• Primary Identifier: Expr4860
• Pattern: A-class motor neuron: enriched in embryo (4.0) and larva (2.2). Neuronal expression include: DA, DB, VA, VB, head and tail neurons. Pan-neuronal: expressed in embryo; enriched in larva (2.3).

• Primary Identifier: Expr4861
• Pattern: A-class motor neuron: enriched in embryo (6.3) and larva (2.5). Neuronal expression include: VA, head neurons. Also expressed in other cells: Intestine. Pan-neuronal: expressed in embryo; enriched in larva (3.1).

• Primary Identifier: Expr4862
• Pattern: A-class motor neuron: enriched in embryo (1.9) and larva (2.1). Neuronal expression include: DA, VB, DB, VD, DD, bright in AS, also head and tail neurons. Pan-neuronal: expressed in embryo; enriched in larva (3.5).

• Primary Identifier: Expr4853
• Pattern: A-class motor neuron: enriched in embryo (3.5) and larva (5.1). Neuronal expression include: All ventral cord neurons. Pan-neuronal: enriched in larva (2.1); not expressed in embryo.

• Primary Identifier: Expr4854
• Pattern: A-class motor neuron: expressed in embryo; enriched in larva (1.6). Neuronal expression include: Posterior ventral cord motor neurons (VA, VB, DB, AS), head and tail neurons, touch neurons. Pan-neuronal: expressed in embryo; enriched in larva (3.0).

• Primary Identifier: Expr4855
• Pattern: A-class motor neuron: enriched in embryo (1.9) and larva (1.6). Neuronal expression include: All neurons.. Pan-neuronal: expressed in embryo; enriched in larva (3.2).

• Primary Identifier: Expr4856
• Pattern: A-class motor neuron: expressed in embryo; enriched in larva (1.9). Neuronal expression include: L2 -- DA, VA, VB, VD, bright in touch neurons, head and tail neurons L3 -- all ventral cord motor neurons. Pan-neuronal: expressed in embryo; enriched in larva (5.9).

• Primary Identifier: Expr4857
• Pattern: A-class motor neuron: enriched in embryo (4.5) and larva (4.8). Neuronal expression include: All ventral cord neurons, head and tail neurons. Pan-neuronal: expressed in embryo; enriched in larva (3.5).

• Primary Identifier: Expr4858
• Pattern: A-class motor neuron: enriched in embryo (2.8) and larva (3.1). Neuronal expression include: DA, VB, AS, DB, DD, HSN, VC4&5, AIY, head neurons. Also expressed in other cells: Muscle, intestine. Pan-neuronal: expressed in embryo; enriched in larva (1.5).

• Primary Identifier: Expr4859
• Pattern: A-class motor neuron: enriched in embryo (8.7) and larva (7.9). Neuronal expression include: I5, ASE, ASG, BAG, DD, M3, M5, head neurons. Pan-neuronal: expressed in embryo; enriched in larva (7.1).

• Primary Identifier: Expr4850
• Pattern: A-class motor neuron: enriched in embryo (2.6); not expressed in larva. Neuronal expression include: DD, head and tail neurons. Also expressed in other cells: Body muscle, pharyngeal muscle. Pan-neuronal: expressed in embryo; enriched in larva (6.5).

• Primary Identifier: Expr4851
• Pattern: A-class motor neuron: enriched in embryo (1.7); not expressed in larva. Neuronal expression include: DA, VD, AS, VB, DB. Also expressed in other cells: Body muscle. Pan-neuronal: expressed in embryo; enriched in larva (2.7).

• Primary Identifier: Expr4849
• Pattern: A-class motor neuron: expressed in larva; enriched in embryo (2.2). Pan-neuronal: enriched in larva (2.0); not expressed in embryo.

• Primary Identifier: Expr4841
• Pattern: A-class motor neuron: expressed in embryo; not expressed in larva. Neuronal expression include: All ventral cord motor neurons, head and tail neurons, PLN. Also expressed in other cells: Pharyngeal muscle, vulval muscle, anal depressor, hypodermis. Pan-neuronal: enriched in embryo (1.8); not expressed in larva.

• Primary Identifier: Expr4842
• Pattern: A-class motor neuron: enriched in embryo (2.9); not expressed in larva. Neuronal expression include: Weak in head and tail neurons, ventral cord. Also expressed in other cells: Pharynx, sheath cells, distal tip cell. Pan-neuronal: enriched in embryo (1.9); expressed in larva.

• Primary Identifier: Expr4843
• Pattern: A-class motor neuron: expressed in larva; enriched in embryo (2.0). Neuronal expression include: Bright in head neurons, few tail neurons. weak in all ventral cord motor neurons. Touch neurons, PDE. Also expressed in other cells: Intestine, head muscle, pharyngeal muscle, hypodermis, distal tip cell. Pan-neuronal: expressed in larva; enriched in embryo(3.0).

• Primary Identifier: Expr4844
• Pattern: A-class motor neuron: expressed in larva; enriched in embryo (2.4). Neuronal expression include: All ventral cord motor neurons, head and tail neurons. Pan-neuronal: expressed in larva; enriched in embryo (2.3).

3 Followed By

Remark	Definition	Other Name	Public Name	Primary Identifier
	The first stage larva. At 25 Centigrade, it ranges 14-25.5 hours after fertilization, 0-11.5 hours after hatch.		L1 larva Ce	WBls:0000024
	A developmental life stage of the nematode Caenorhabditis elegans that occurs from egg hatching until adulthood.		larva Ce	WBls:0000023
	A developemental life stage of the nematode Caenorhabditis elegans that occurs from egg hatching until death.		postembryonic Ce	WBls:0000022

0 Preceded By

3 Sub Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The C. elegans life stage spanning 620-800min(hatch) after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. A stage after elongation is over. The last stage of embryogenesis. Also called pre-hatched embryo, late embryo or morphogenetic embryo.		fully-elongated embryo Ce	WBls:0000021
	The C. elegans life stage spanning 350-620min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The stage that embryo starts elongation until elongation is over.		elongating embryo Ce	WBls:0000015
	The C. elegans life stage spanning 0-350min after first cleavage at 20 Centigrade. Proliferate from 1 cell to 560 cells. From start of first cleavage until cleavage is over.		proliferating embryo Ce	WBls:0000004