LifeAre lab-grown human sperm the real thing? If further tests can demonstrate that they are identical to naturally grown sperm, they could be studied in the hope of developing treatments for male infertility ¿ìè¶ÌÊÓÆµ
Obama's stem cell plans could backfire ¿ìè¶ÌÊÓÆµs fear that the new stem cell regulations could actually hinder existing research ¿ìè¶ÌÊÓÆµ