RIH

Type: Interneuron
Connectivity:
- In MoW: RIH
- In WormWiring: RIH_h, RIH_m
- In Nemanode: RIH
In Wormbase: RIH
Lineage: AB prpappaaa
Location: Head
Description: RIH has a single, large cell body situated on the ventral midline at the anterior end of the ventral ganglion.
Neurotransmitter/ Neuropeptide:
- Acetylcholine
- Serotonin - may be absorbing (and then releasing) rather than synthesizing serotonin
(Pereira et al., 2015; Sze et al., 2000)
Innexin expression:
- CHE-7
- INX-1a
- INX-1b
- INX-2
- INX-7
- INX-10a
- INX-14
- UNC-7 only in dauer
- UNC-9
(Bhattacharya et al., 2019)
Receptor expression:
Function:
Reporters
- At CGC:
- Other:

Click here for larger version
RIH (AB prpappaaa) development in the embryo. Dorsal view. Bottom is left side of the embryo. Spheres indicate individual nuclei. Black sphere: ancestors of RIH; dark grey spheres: apoptotic cells; other cells follow the WA color code (after they acquire specific cell or tissue identities). 0 min is fertilization. Click on the movie for higher resolution rendition (by A. Santella & Z. Bao).

Last Revision: July 25, 2025