WormMine: ExpressionPattern Expr1419

• Pattern: PHA-4 was observed in the nuclei of cells destined to form the digestive tract. At the 4E stage, weak expression is detected in 8 MS great-granddaughters and 10 ABa descendants (ABaraaaa/p, ABaraapa/p, ABarapaa/p, ABalpaaa/p, ABalpapa/p) that each produce pharyngeal cells, as well as nonpharyngeal cells. Faint expression was also detected in the four midgut precursors. Brighter staining is observed in 6 to 8 MS-derived and 16 to 18 ABa-derived cells after the next cell division (MSaaaa/p, MSaapa/p, MSpaaa/p, MSpapa/p). Soon thereafter, at the 8 to 12E stage, PHA-4 is first observed in the rectal precursors. Expression is maintained in all pharyngeal, midgut, and rectal cells throughout embryogenesis.
• Primary Identifier: Expr1419
• Remark: No detailed description on postembryonic expression pattern.
• Subcellular Localization: nuclei

39 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
The passageway in the hindgut between the posterior intestine, the rectal valve and the opening to the exterior.	rectum		WBbt:0005773
Interfacial (hypodermal) cells which connect the hypodermal epithelium of the lips to the pharyngeal epithelium, firmly binding the inner tissue (the pharynx) to the outer bodywall (the hypodermis).	arcade cell		WBbt:0005793
	pharyngeal cell		WBbt:0005460
Intestino-rectal valve	virL	lineage name: ABprpappppp	WBbt:0004511
Intestino-rectal valve	virR	lineage name: ABprpappppa	WBbt:0004510
Rectal cell, postembryonic blast cell	K cell	lineage name: ABplpapppaa	WBbt:0004499
embryonic cell	ABaraaap		WBbt:0005861
embryonic cell	ABaraapa		WBbt:0005853
embryonic cell	ABalpaap		WBbt:0005934
embryonic cell	ABaraapp		WBbt:0006153
embryonic cell	ABaraaaa		WBbt:0006360
embryonic cell	ABalpaaa		WBbt:0006557
embryonic cell	ABalpapa		WBbt:0006573
embryonic cell	ABalpapp		WBbt:0006607
embryonic cell	Eal		WBbt:0006441
embryonic cell	Ear		WBbt:0006370
embryonic cell	Epr		WBbt:0006547
embryonic cell	Epl		WBbt:0006000
Rectal cell	K' cell	lineage name: ABplpapppap	WBbt:0004497
embryonic cell	MSaaaa		WBbt:0005894
embryonic cell	MSapa		WBbt:0005898
embryonic cell	MSpaap		WBbt:0005878
embryonic cell	MSpaaa		WBbt:0005933
cell that makes up the pharyngeal-intestinal valve.	pharyngeal-intestinal valve cell		WBbt:0007848
embryonic cell	MSapp		WBbt:0006036
embryonic cell	MSpap		WBbt:0006034
embryonic cell	MSaaap		WBbt:0006160
embryonic cell	MSpapp		WBbt:0006201
embryonic cell	ABarapap		WBbt:0006334

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00004013	pha-4	F38A6.1	Caenorhabditis elegans

1 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