WormMine: AnatomyTerm WBbt:0006468

• Definition: embryonic cell
• Name: MSpaaapp
• Primary Identifier: WBbt:0006468

4 Children

Definition	Name	Synonym	Primary Identifier
nucleus of pedigree MSpaaapp	MSpaaapp nucleus		WBbt:0002377
Pharyngeal muscle cell	pm6D	lineage name: MSpaaappp	WBbt:0004308
Pharyngeal muscle cell nucleus	pm5DR	lineage name: MSpaaappa	WBbt:0004313
pharyngeal muscle cell syncytium, layer five, dorsal.	pm5DL-pm5DR	m5DL-m5DR	WBbt:0003736

0 Expression Clusters

9 Expression Patterns

• Primary Identifier: Expr92
• Remark: Legacy Data: "Bauer PK" "Mounsey A" "Royall CM" "Hope IA" Date 1997-06.
• Pattern: This pattern is very strong. This strain requires less than one hour of incubation for the pattern to be clearly seen. If left longer, non-localised staining of the pharyngeal muscles occurs obscuring the nuclei. There are three components to this pattern. The first is diffuse staining nucei in the procorpus (m2 and m3). The second is strong expession in the m4 nuclei in the metacorpus, and the final component involves m5, m6 and m7 in the terminal bulb. There is some mosaicism exhibited as not all components are seen in all worms. No staining has been seen in the isthmus.

• Primary Identifier: Expr1633
• Pattern: First, pKK52 expression begins at the 28-cell stage in all four granddaughters and 16 great-great granddaughters of the MS and AB founder cells, respectively; this expression continues in many, possibly all, of their descendants until around the time of hatching. Second, expression becomes more pronounced in seam cells about 1 hour after their birth. This seam expression remains strong throughout embryonic and larval development, but becomes slightly reduced in adults. Third, robust expression is also seen in several cells in the head region, at least some of which are cells in the nervous system (neurons and/or support cells), beginning at approximately the comma stage and continuing through adulthood. For simplicity, this component of the expression pattern was referred as nervous system expression, although the precise identity of these cells were not determined.

• Primary Identifier: Expr1634
• Remark: See Expr1633 for pKK52 expression pattern.
• Pattern: pKK41 is expressed in the same groups of cells as the elt-5 translational reporter (pKK52), but the relative expression levels are different. Whereas the elt-5 reporter is strongly expressed in both seam cells and the nervous system during the comma through pretzel stages, the elt-6 reporter is strongly expressed only in the nervous system. Only weak expression of the elt-6 reporter is apparent in seam cells and in the AB and MS descendants during embryogenesis, but the seam expression becomes stronger during larval development. Strong expression of the elt-6 reporter in the nervous system continues throughout larval development.

• Primary Identifier: Expr10347
• Pattern: Inferred expression. EPIC dataset. http://epic.gs.washington.edu/ Large-scale cellular resolution compendium of gene expression dynamics throughout development. This reporter was inferred to be expressing in this cell or one of its embryonic progenitor cells as described below. To generate a compact description of which cells express a particular reporter irrespective of time, the authors defined a metric "peak expression" for each of the 671 terminal ("leaf") cells born during embryogenesis. For each of these cells, the peak expression is the maximal reporter intensity observed in that cell or any of its ancestors; this has the effect of transposing earlier expression forward in time to the terminal set of cells. This metric allows straightforward comparisons of genes' cellular and lineal expression overlap, even when the expression occurs with different timing and despite differences in the precise time point that curation ended in different movies, at the cost of ignoring the temporal dynamics of expression, a topic that requires separate treatment. For simplicity, the authors use the term "expressing cells" to mean the number of leaf cells (of 671) with peak expression greater than background (2000 intensity units) and at least 10% of the maximum expression in that embryo. Quantitative expression data for all cells are located here: ftp://caltech.wormbase.org/pub/wormbase/datasets-published/murray2012/

• Primary Identifier: Expr10307
• Pattern: Inferred expression. EPIC dataset. http://epic.gs.washington.edu/ Large-scale cellular resolution compendium of gene expression dynamics throughout development. This reporter was inferred to be expressing in this cell or one of its embryonic progenitor cells as described below. To generate a compact description of which cells express a particular reporter irrespective of time, the authors defined a metric "peak expression" for each of the 671 terminal ("leaf") cells born during embryogenesis. For each of these cells, the peak expression is the maximal reporter intensity observed in that cell or any of its ancestors; this has the effect of transposing earlier expression forward in time to the terminal set of cells. This metric allows straightforward comparisons of genes' cellular and lineal expression overlap, even when the expression occurs with different timing and despite differences in the precise time point that curation ended in different movies, at the cost of ignoring the temporal dynamics of expression, a topic that requires separate treatment. For simplicity, the authors use the term "expressing cells" to mean the number of leaf cells (of 671) with peak expression greater than background (2000 intensity units) and at least 10% of the maximum expression in that embryo. Quantitative expression data for all cells are located here: ftp://caltech.wormbase.org/pub/wormbase/datasets-published/murray2012/

• Primary Identifier: Expr10469
• Pattern: Inferred Expression. EPIC dataset. http://epic.gs.washington.edu/ Large-scale cellular resolution compendium of gene expression dynamics throughout development. This reporter was inferred to be expressing in this cell or one of its embryonic progenitor cells as described below. To generate a compact description of which cells express a particular reporter irrespective of time, the authors defined a metric "peak expression" for each of the 671 terminal ("leaf") cells born during embryogenesis. For each of these cells, the peak expression is the maximal reporter intensity observed in that cell or any of its ancestors; this has the effect of transposing earlier expression forward in time to the terminal set of cells. This metric allows straightforward comparisons of genes' cellular and lineal expression overlap, even when the expression occurs with different timing and despite differences in the precise time point that curation ended in different movies, at the cost of ignoring the temporal dynamics of expression, a topic that requires separate treatment. For simplicity, the authors use the term "expressing cells" to mean the number of leaf cells (of 671) with peak expression greater than background (2000 intensity units) and at least 10% of the maximum expression in that embryo. Quantitative expression data for all cells are located here: ftp://caltech.wormbase.org/pub/wormbase/datasets-published/murray2012/

• Primary Identifier: Expr10516
• Pattern: Inferred Expression. EPIC dataset. http://epic.gs.washington.edu/ Large-scale cellular resolution compendium of gene expression dynamics throughout development. This reporter was inferred to be expressing in this cell or one of its embryonic progenitor cells as described below. To generate a compact description of which cells express a particular reporter irrespective of time, the authors defined a metric "peak expression" for each of the 671 terminal ("leaf") cells born during embryogenesis. For each of these cells, the peak expression is the maximal reporter intensity observed in that cell or any of its ancestors; this has the effect of transposing earlier expression forward in time to the terminal set of cells. This metric allows straightforward comparisons of genes' cellular and lineal expression overlap, even when the expression occurs with different timing and despite differences in the precise time point that curation ended in different movies, at the cost of ignoring the temporal dynamics of expression, a topic that requires separate treatment. For simplicity, the authors use the term "expressing cells" to mean the number of leaf cells (of 671) with peak expression greater than background (2000 intensity units) and at least 10% of the maximum expression in that embryo. Quantitative expression data for all cells are located here: ftp://caltech.wormbase.org/pub/wormbase/datasets-published/murray2012/

• Primary Identifier: Expr10422
• Pattern: Inferred Expression. EPIC dataset. http://epic.gs.washington.edu/ Large-scale cellular resolution compendium of gene expression dynamics throughout development. This reporter was inferred to be expressing in this cell or one of its embryonic progenitor cells as described below. To generate a compact description of which cells express a particular reporter irrespective of time, the authors defined a metric "peak expression" for each of the 671 terminal ("leaf") cells born during embryogenesis. For each of these cells, the peak expression is the maximal reporter intensity observed in that cell or any of its ancestors; this has the effect of transposing earlier expression forward in time to the terminal set of cells. This metric allows straightforward comparisons of genes' cellular and lineal expression overlap, even when the expression occurs with different timing and despite differences in the precise time point that curation ended in different movies, at the cost of ignoring the temporal dynamics of expression, a topic that requires separate treatment. For simplicity, the authors use the term "expressing cells" to mean the number of leaf cells (of 671) with peak expression greater than background (2000 intensity units) and at least 10% of the maximum expression in that embryo. Quantitative expression data for all cells are located here: ftp://caltech.wormbase.org/pub/wormbase/datasets-published/murray2012/

• Primary Identifier: Expr10249
• Pattern: Inferred expression. EPIC dataset. http://epic.gs.washington.edu/ Large-scale cellular resolution compendium of gene expression dynamics throughout development. This reporter was inferred to be expressing in this cell or one of its embryonic progenitor cells as described below. To generate a compact description of which cells express a particular reporter irrespective of time, the authors defined a metric "peak expression" for each of the 671 terminal ("leaf") cells born during embryogenesis. For each of these cells, the peak expression is the maximal reporter intensity observed in that cell or any of its ancestors; this has the effect of transposing earlier expression forward in time to the terminal set of cells. This metric allows straightforward comparisons of genes' cellular and lineal expression overlap, even when the expression occurs with different timing and despite differences in the precise time point that curation ended in different movies, at the cost of ignoring the temporal dynamics of expression, a topic that requires separate treatment. For simplicity, the authors use the term "expressing cells" to mean the number of leaf cells (of 671) with peak expression greater than background (2000 intensity units) and at least 10% of the maximum expression in that embryo. Quantitative expression data for all cells are located here: ftp://caltech.wormbase.org/pub/wormbase/datasets-published/murray2012/

5 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The whole period of embryogenesis in the nematode Caenorhabditis elegans, from the formation of an egg until hatching.		embryo Ce	WBls:0000003
	The C. elegans life stage spanning 290-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage when embryo just finished gastrulation and is enclosing.		enclosing embryo Ce	WBls:0000013
	The C. elegans life stage spanning 100-290min after first cleavage at 20 Centigrade. Proliferate from 28 cells to 421 cells. Referring to the whole period of gastrulation.		gastrulating embryo Ce	WBls:0000010
	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
	The C. elegans life stage spanning 210-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage before the fast cleavage of cells finishes.		late cleavage stage embryo Ce	WBls:0000014

2 Parents

Definition	Name	Synonym	Primary Identifier
embryonic cell	MSpaaap		WBbt:0006030
cell that exists in and is part of an embryo.	embryonic cell		WBbt:0007028