WormMine: ExpressionPattern Expr12798

• Pattern: tat-3 reporter signal first appears in embryos in the developing pharynx. In the fully formed alimentary system, very strong GFP fluorescence is observed in the muscle, marginal and buccal epithelial cells of the pharynx, the pharyngeal-intestinal valve and, with lesser intensity, the rectal epithelial cells. Seam cells display very strong fluorescence as soon as this lineage becomes established during embryonic development. In adults, moderate to weak fluorescence seems to arise from the XXX cells, some unidentified cells in the head and tail regions and the hypodermis. In the reproductive system, tat-3 reporter expression begins in the distal tip cells (DTC) in L1 and in the anchor cell (AC) in early L3. GFP signal is later visible in the dividing progeny of the vulval precursor cells (VPCs). In late L4, the anchor cell fuses with the uterine seam cell (utse), which does not express the reporter. The vulval cells continue exhibiting moderate fluorescence into the adulthood.
• Primary Identifier: Expr12798

16 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
A group of six equivalent cells forms a tightly constructed `valve` that links the posterior bulb of the pharynx to the anterior four cells of the intestine. These six cells comprise a small epithelial channel with a cuticular lining in continuity with the pharyngeal cuticle and link the lumen of the pharynx to the large lumen of the anterior intestine.	pharyngeal-intestinal valve	cardia	WBbt:0005767
somatic cell that situates at the tip of a gonad arm.	distal tip cell	DTC	WBbt:0006865
Epidermal layer.	hypodermis	epidermis	WBbt:0005733
type of cells that make up muscle layers in the pharynx.	pharyngeal muscle cell		WBbt:0005451
the feeding organ, a neuro-muscular pump in the head of the animal, used to ingest food, bacteria suspended in liquid, filter them out, grind them up and transport posteriorly into the instestine.	pharynx	esophagus	WBbt:0003681
a group of hypodermal cells that lie along the apical midline of the hypodermis, at the extreme left and right sides between nose and tail	seam cell	lateral hypodermis	WBbt:0005753
cell that makes up epithelium in pharynx.	pharyngeal epithelial cell	pharyngeal epithelium	WBbt:0005459
posterior region, from rectum to the end	tail		WBbt:0005741
anchor cell, induces vulva, part of hermaphrodite gonad.	anchor cell	AC	WBbt:0004522
anterior-most body region containing the pharynx.	head		WBbt:0005739
Embryonic head hypodermal cell	XXXL	lineage name: ABplaaapaa	WBbt:0004581
Embryonic head hypodermal cell	XXXR	lineage name: ABarpappaa	WBbt:0004579
cell that has the potential to form structural part of a vulva.	vulval precursor cell	VPC	WBbt:0007809
a type of pharyngeal cell that connects basement membrane to the apices of triangle-shaped pharyngeal lumen.	marginal cell		WBbt:0003673
These cells include: B, F, Y, U, K' and K. All rectal epithelial cells contain secretory membrane stacks along this region facing the lumenal cuticle and produce some portion of the cuticular lining of the rectum. These are interfacial cells that connect the alimentary system to the main body syncytium.	rectal epithelial cell	rectal epithelium	WBbt:0008182
Constituent cell of a hermaphrodite vulva.	vulval cell	vulval epithelial cell	WBbt:0007831

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00012360	tat-3	W09D10.2	Caenorhabditis elegans

4 Life Stages

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
	The stage that begins when a C.elegans individual is fully-developed and has reached maturity.		adult Ce	WBls:0000041
	The whole period of embryogenesis in the nematode Caenorhabditis elegans, from the formation of an egg until hatching.		embryo Ce	WBls:0000003
	The third stage larva of nematodes.		L3 larval stage	WBls:0000108