WormMine: AnatomyTerm WBbt:0008410

• Definition: Hypodermal socket cell of the phasmid sensillum.
• Name: phasmid socket cell
• Primary Identifier: WBbt:0008410
• Synonym: Phso

4 Children

Definition	Name	Synonym	Primary Identifier
Post-embryonic cell of pedigree TL.paa, phasmid sockets.	PHso1L	lineage name: TL.paa	WBbt:0004112
Post-embryonic cell of pedigree TR.paa. phasmid sockets.	PHso1R	lineage name: TR.paa	WBbt:0004110
Post-embryonic cell of pedigree TL.pap, phasmid sockets.	PHso2L	lineage name: TL.pap	WBbt:0004108
Post-embryonic cell of pedigree TR.pap, phasmid sockets.	PHso2R	lineage name: TR.pap	WBbt:0004106

2 Expression Clusters

Regulated By Treatment	Description	Algorithm	Primary Identifier
	Top 300 transcripts enriched in ADE sheath cell, ADE socket cell, amphid sheath cell, amphid socket cell, cephalic sheath cell, CEP socket cell, IL sheath cell, IL socket cell, OL sheath cell, OL socket cell, PDE sheath cell, PDE socket cell, phasmid sheath cell, phasmid socket cell according to single cell RNAseq.	Top 300 enriched transcripts were determined by log2.ratio of the tpm in the cell type vs the tpm in the other cells * the log2 of the cell.type tpm.	WBPaper00061340:Glia
	Single-cell RNA-Seq cell group 115 expressed in: Phasmid socket.	CellRanger, DecontX, Monocle3, Louvain algorithm.	WBPaper00065623:115

12 Expression Patterns

• Primary Identifier: Expr11583
• Pattern: Paakg-5::GFP is expressed in the female gonad sheath cells, vulva epithelium and neurons, ventral cord neurons and excretory cell. It is also seen in the spermatheca and epithelial seam cells. In addition to the excretory cell, Paakg-5::GFP displays strong expression levels in the pharyngeal epithelia, neurons, some ring neurons and sensory neuron termini. In the tail, Paakg- 5::GFP signal mostly localizes to the pre-anal ganglion, rectum epithelium, intestinal-rectal valve and phasmid support cells. For a summary of Paakg-5::GFP see table S10.

• Primary Identifier: Expr11585
• Pattern: Head Paak-2::GFP expression is mostly seen in the excretory cell but is also observed in pharyngeal neurons, epithelial cells, a subset of ring neurons, amphid socket cells and head body wall muscles. Paak-2::GFP is also expressed in the posterior intestine, rectal gland and epithelial cells, and in phasmids. Paak-2::GFP is detected in vulval muscles. For a summary of Paak-2::GFP see table S10.

• Primary Identifier: Expr14140
• Pattern: ASI (dim), BAG, (I4), 3 more head neuron pairs, DD, VD, Amso, PHsh or Phso

• Primary Identifier: Expr9295
• Pattern: Strong sta-2 expression was observed in the epidermis throughout development. There was also an expression in the seam cells, the intestine, the phasmid socket cells, and the excretory duct cell, as well as cells in the vulva and the dorsal rectal cells.

• Primary Identifier: Expr10193
• Pattern: Strong expression of bus-18 was observed in the rectal epithelial cells, but in addition wide-spread expression was observed in other epithelial cells. General expression in the hypodermis and vulva was observed, as well as in the labial support and arcade cells in the head, the excretory gland cell, the spermatheca, and the phasmid socket and sheath cells.

• Primary Identifier: Expr11586
• Pattern: Paakg-4::gfp is broadly expressed in C. elegans. Paakg-4::gfp is seen in tail sensory organs: phasmid sheath, socket cells and neurons, as well as in epithelial rectal cells, anal-depressor muscle, pre-anal ganglion rectal neurons, body wall muscles, posterior intestine and dorsal cord neuronal processes. Paakg-4::gfp is expressed in vulval, uterine muscles and ventral cord processes. Head expression mostly localizes to the ring ganglia plus 6 pharyngeal neurons. It is also seen in amphid sensory organs including sheath, socket cells and neurons. For a summary of Paakg-4::gfp see table S10.

• Primary Identifier: Expr13748
• Pattern: F25H8.21p::gfp was expressed in neuronal support cells (amphid sheath cells and phasmid socket cells) and the excretory duct cell.

• Primary Identifier: Expr9293
• Pattern: Strong snf-12 expression was observed in the epidermis of C. elegans throughout development. Expression is also seen in vulval cells, in the excretory cell, in the seam cells, and in the amphid and phasmid socket cells.

• Primary Identifier: Expr13752
• Pattern: R5::Deltapes-10::gfp was expressed in amphid sheath, phasmid socket and unidentified head cells.

• Primary Identifier: Expr9197
• Pattern: No expression from the transgene is seen in embryonic stages. GFP expression is detected in glial cells associated with amphid, phasmid, labial and posterior deirids (PDE) sensory neurons as early as the L1 stage and continuing throughout larval development. Expression is also seen in vulval tissue in L4 and adult animals.

• Primary Identifier: Expr11062
• Pattern: RCN-1::GFP is expressed in PHCL and PHCR, as well as in other more anterior neurons during tail tip morphogenesis. After morphogenesis, expression is intense in the phasmid socket cells.

• Primary Identifier: Expr13750
• Pattern: R2::Deltapes-10::gfp was expressed in vulval cells, rectal epithelial cells, amphid socket and phasmid socket cells.

0 Life Stages

1 Parents

Definition	Name	Synonym	Primary Identifier
An interfacial epithelial cell which forms a distal cap on a sheath cell to bind the sheath of a sensillum to the neighboring hypodermis, via adherens junctions. There is often a narrow opening through the socket from the exterior into the sheath channel, allowing ciliated dendrites to be exposed to the external environment. The socket cell functions similarly to a glial cell.	socket cell		WBbt:0005750