Enriched in several structures, including MSaaaaapa; head mesodermal cell; pharyngeal cell; pharyngeal-intestinal valve; and sensory neurons based on microarray; RNA-seq; and single-cell RNA-seq studies. Is affected by several genes including daf-16; daf-2; and skn-1 based on microarray and RNA-seq studies. Is affected by eighteen chemicals including hydrogen sulfide; rotenone; and Cry5B based on microarray and RNA-seq studies.