WormMine: ExpressionPattern Expr1106

• Pattern: VAB-2/EFN-1 expression first detected at the 100-cell stage in several cells in the anterior and posterior. After gastrulation VAB-2/EFN-1 was expressed in lateral cells, corresponding to neuroblasts. During epidermal enclosure VAB-2/EFN-1 was expressed in neurons in the midanterior of the embryo, beneath the leading cells of the epidermis, and in several tail neurons. At later stages VAB-2/EFN-1 was expressed in the processes of many neurons, and in the pharynx. Thus, VAB-2/EFN-1 was expressed mostly in the developing nervous system and not in epidermal cells before or during epidermal enclosure.
• Primary Identifier: Expr1106
• Remark: Postembryonic expressed pattern was not described.
• Subcellular Localization: VAB-2/EFN-1 was expressed in the processes of many neurons.

8 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
a large process bundle that runs along the vental mid-line extending from the ventral region of the nerve ring.	ventral nerve cord	ventral cord	WBbt:0005829
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
neuron with its cell body situated in the head, excluding the pharynx.	head neuron		WBbt:0006751
neuron with its cell body situated in the tail, posterior to rectum.	tail neuron		WBbt:0006759
Major cell type of nervous tissue, specialized for transmission of information in the form of patterns of impulses.	neuron	neurone	WBbt:0003679
the most extensive region of neuropil in the animal, consists of a large toroidal bundle of processes.	nerve ring	circumpharyngeal nerve ring	WBbt:0006749
A blast cell from which a neuron develops.	neuroblast		WBbt:0008594
a bundle of nerve processes that runs along the dorsal mid-line of the animal.	dorsal nerve cord	dorsal cord	WBbt:0006750

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00006869	vab-2	Y37E11AR.6	Caenorhabditis elegans

4 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The C. elegans life stage spanning 620-800min(hatch) 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. A stage after elongation is over. The last stage of embryogenesis. Also called pre-hatched embryo, late embryo or morphogenetic embryo.		fully-elongated embryo Ce	WBls:0000021
	The C. elegans life stage spanning 350-620min 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 stage that embryo starts elongation until elongation is over.		elongating embryo Ce	WBls:0000015
	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