WormMine: ExpressionPattern Expr104

• Pattern: Strong expression is seen in the large posterior nuclei of the intestine, in adults and late larval stages. There is some variability in the number of nuclei staining. Usually the extreme posterior nuclei stain first. Occasionally in 3-fold embryos a few nuclei show b-galactosidase expression. All injected lines show this expression. This fusion contains all the intergenic region, though this region is only separated from F38B6.5 (the next upstream gene) by ~0.5kb, and so could be a downstream gene; the promoter driving expression of F38B6.4 would then not be included in the construct.
• Primary Identifier: Expr104
• Remark: Other strains-- UL335, UL336 late embryo(author) = 3-fold embryo(curator).

1 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
any of 20 large epithelial cells which form a tube and are mostly situated as bilaterally symmetric pairs around the tubular lumen. Each of these cell pairs forms an intestinal ring ( II-IX int rings). The most anterior intestinal ring (int ring I), however, is made of four cells. Intestinal cells contain large nuclei with large nucleoli and numerous autofluorescent granules in their cytoplasm.	intestinal cell		WBbt:0005792

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00018174	F38B6.4	F38B6.4	Caenorhabditis elegans

4 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The stage that begins when a C.elegans individual is fully-developed and has reached maturity.		adult Ce	WBls:0000041
	The third stage larva. At 25 Centigrade, it ranges 32.5-40 hours after fertilization, 18.5-26 hours after hatch.		L3 larva Ce	WBls:0000035
	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 C. elegans life stage spanning 520-620min 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 shape of embryo is elongated and tripple fold. A stage between 2-fold embryo and fully-elongated embryo. Also called pretzel embryo or pretzel stage.		3-fold embryo Ce	WBls:0000020