Enriched in several structures, including ABalppppapa; ABplaapaaa; NSM; PLM; and amphid neurons based on tiling array; RNA-seq; and single-cell RNA-seq studies. Is affected by several genes including rrf-3; pmk-1; and sek-1 based on microarray; tiling array; and RNA-seq studies. Is affected by twenty-one chemicals including methylmercury hydroxide; 1-methylnicotinamide; and manganese chloride based on RNA-seq and microarray studies.