Lessons from Chimeras

The chimera marmoset story reported linkurl:here;http://www.the-scientist.com/news/home/53033/ and elsewhere is fascinating; I was stunned by the possibility, not heavily noted in a lot of press, that male cells might have made it into the germline of a female - that is XY cells from a male might have developed into eggs in his female twin sister resulting in a live birth. Germline transmission of one's brothers cells is interesting enough, but the idea of XY eggs is particularly interesting --