Enriched in several structures, including accessory cell; coelomocyte; excretory cell; neurons; and ventral nerve cord based on microarray; tiling array; RNA-seq; and single-cell RNA-seq studies. Is affected by several genes including skn-1; hsf-1; and eat-2 based on RNA-seq and microarray studies. Is affected by seven chemicals including Rifampin; allantoin; and Sirolimus based on RNA-seq and microarray studies.