Low embryo count fuels US stem-cell debate.
Powell
Kendall
K
D002469:Cell Separation; D004622:Embryo, Mammalian / Q000166:cytology / Q000196:embryology; D005260:Female; D006801:Humans; D007246:Infertility; D008297:Male; D018456:Reproductive Medicine / Q000941:ethics; D035845:Research Embryo Creation / Q000941:ethics; D013234:Stem Cells / Q000166:cytology; D014019:Tissue Donors; D014481:United States