WormMine: ExpressionPattern Expr10007

• Pattern: The expression of TAT-2 was first detected in first larval stage worms (L1) in the intestine. From the L4 stage on through adulthood, the strongest GFP fluorescence could be detected in the intestine, the excretory canal cell and the spermatheca. However, expression was also seen in the pharyngeal procorpus, the excretory gland cell, the pharyngeal- intestinal valve, and the rectal gland cell. During the L4 stage, the signal was also seen in vulva cells and, around the timing of the first ovulation, it is also expressed in the proximal gonad.
• Primary Identifier: Expr10007

9 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
A chain of very large cuboidal cells forming a wide central lumen in which food arrives from the posterior pharynx, is digested, and from which waste products proceed to the rectum. Intestinal rings form in groups of two and four cells surrounding the common lumen; thus the epithelium is only one cell deep at any point, with neighboring cells firmly secured to their neighbors by apical adherens junctions. These cells have very large nuclei and many large vacuoles, yolk granules, and other inclusions; the latter increase in number and electron density as the animal ages.	intestine	gut	WBbt:0005772
female genital.	vulva		WBbt:0006748
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
an accordion-like tube that contains sperm and is the site of oocyte fertilization.	spermatheca		WBbt:0005319
gland cell of the secretory-excretory system, sends processes to ring, opens into excretory duct.	excretory gland cell	exc gl	WBbt:0005776
Four processes (canals) of the excretory canal cell each contain a central collecting lumen which feeds to a central lumenal canal in the cell body; the central canal forms a specialized membrane to release fluids into the excretory duct. These five canals form a continuous H-shaped channel which extends almost the full length of the body, generally in contact with the lateral hypodermis and the pseudocoelom.	excretory canal	canal	WBbt:0005775
	rectal gland cell		WBbt:0005799
organ producing either sperm or ova.	gonad		WBbt:0005175
anterior section of pharyngeal corpus.	procorpus		WBbt:0003713

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00019166	tat-2	H06H21.10	Caenorhabditis elegans

3 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The fourth stage larva. At 25 Centigrade, it ranges 40-49.5 hours after fertilization, 26-35.5 hours after hatch.		L4 larva Ce	WBls:0000038
	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