Enriched in several structures, including RIS; carbon dioxide sensory neurons; excretory system; male distal tip cell; and somatic gonad precursor based on RNA-seq and single-cell RNA-seq studies. Is affected by several genes including skn-1; eat-2; and clk-1 based on tiling array; microarray; and RNA-seq studies. Is affected by six chemicals including tryptophan; Sodium Chloride; and Rifampin based on microarray and RNA-seq studies.