Enriched in AFD; AINL; AINR; head mesodermal cell; and intestine based on SAGE; tiling array; RNA-seq; single-cell RNA-seq; and proteomic studies. Is affected by several genes including daf-2; skn-1; and dpy-10 based on proteomic; RNA-seq; and microarray studies. Is affected by sixteen chemicals including mianserin; nicotine; and Zidovudine based on RNA-seq; proteomic; and microarray studies.