Egg shortage hits race to clone human stem cells.
Brendan
B
Maher
D053595:Embryonic Stem Cells / Q000166:cytology*; D005260:Female; D006801:Humans; D018587:Oocyte Donation / Q000191:economics* / Q000941:ethics / Q000331:legislation & jurisprudence* / Q000706:statistics & numerical data; D010063:Ovum / Q000166:cytology; D035845:Research Embryo Creation / Q000191:economics / Q000941:ethics / Q000331:legislation & jurisprudence; D013219:State Government; D014481:United States