||Nematode Caenorhabditis elegans
||Michael H. L. Snow, Cell death in embryonic development, in Perspectives on mammalian cell death. C. S. Potten (ed.). Oxford Scientific Publications, Oxford, 1987. P.208 2nd paragraph
||Sulston JE, Schierenberg E, White JG, Thomson JN. The embryonic cell lineage of the nematode Caenorhabditis elegans. Dev Biol. 1983 Nov100(1):64-119.PubMed ID6684600
||P.208 2nd paragraph:"Sexual dimorphism in Caenorhabditis is brought about by differential cell death. At around 470 minutes of development male-specific neurons (CEMs) die in hermaphrodites, whilst in males hermaphrodite-specific neurons (HSNs) die. There are six presumptive neurons involved in this development and all survive in both animals long enough to undergo normal migration and development of many characteristics of their normal differentiated state before the two HSNs or the four CEMs die (primary source)."