Enriched in several structures, including anterior ganglion (ant); anterior hypodermis; excretory system; mechanosensory neurons; and somatic gonad precursor based on microarray; tiling array; RNA-seq; and single-cell RNA-seq studies. Is affected by several genes including daf-2; rrf-3; and eat-2 based on RNA-seq and microarray studies. Is affected by fourteen chemicals including methylmercury hydroxide; methylmercuric chloride; and manganese chloride based on RNA-seq and microarray studies.