WormMine: ExpressionPattern Expr94

• Pattern: Expression of this neural pattern is first seen prior to the embryonic comma stage, and extends through to adulthood. Strong staining is seen in the ventral nerve cord and its cell bodies, in the retrovesicular ganglion, the circumpharyngeal nerve ring, and in the rectal muscle group involved in defecation (anal depressor, sphincter muscle and intestinal muscle). The DVB neuron which innervates this muscle group also exhibits staining. Weaker staining can be observed in the dorsal nerve cord and in some commissures possibly of VD or DD type. Staining appears to be in foci along the commissures.
• Primary Identifier: Expr94
• Remark: Legacy Data: "Bauer PK" "Mounsey A" "Royall CM" "Hope IA" Date 1997-07.

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
Neuron class of thirteen motoneurons, with cell bodies in the ventral cord, which innervate ventral muscles. Each cell has an anteriorly directed process emanating from its cell body.	VD neuron		WBbt:0005303
Neuron class of six motoneurons, with cell bodies in the ventral cord, which innervate dorsal muscles. Each cell has a short, posteriorly directed and a longer, anteriorly directed process emanating from its cell body. The anterior process has a branch, which leaves the ventral cord as a commissure and runs round to the dorsal cord.	DD neuron		WBbt:0005270
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 bundle of nerve processes that runs along the dorsal mid-line of the animal.	dorsal nerve cord	dorsal cord	WBbt:0006750
Ganglion that lies at the anterior limit of the ventral nerve cord, near the ventral ganglion and nerve ring in the head posterior to the excretory pore. It is open and continuous with the region containing the motoneurons of the ventral cord. In the early L1 this ganglion holds 12 neuron cell bodies plus one neuroblast (Sulston and Horvitz, 1977; White et al., 1986). In the adult animal, the ganglion holds 20 neuron cell bodies.	retrovesicular ganglion		WBbt:0005656
Neuron class of one ring interneuron, cell body in dorsorectal ganglion, inervates rectal muscles.	DVB	lineage name: K.p	WBbt:0004822
muscle that controls hermaphrodite rectal opening.	rectal muscle	anal muscle	WBbt:0005803

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00010096	rskd-1	F55C5.7	Caenorhabditis elegans

6 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
	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 second stage larva. At 25 Centigrade, it ranges 25.5-32.5 hours after fertilization, 11.5-18.5 hours after hatch.		L2 larva Ce	WBls:0000027
	The whole period of embryogenesis in the nematode Caenorhabditis elegans, from the formation of an egg until hatching.		embryo Ce	WBls:0000003