Stem cells. Deriving 'controversy-free' ES cells is controversial.
Vogel
Gretchen
G
D000818:Animals; D001755:Blastocyst / Q000166:cytology; D002460:Cell Line; D010064:Embryo Implantation; D033041:Embryo Research / Q000191:economics / Q000941:ethics*; D004622:Embryo, Mammalian / Q000166:cytology*; D005260:Female; D005380:Financing, Government; D006801:Humans; D051379:Mice; D053652:Nuclear Transfer Techniques; D039904:Pluripotent Stem Cells; D012109:Research Support as Topic; D013234:Stem Cells; D014481:United States