TY - GEN AU - George,Robert P AU - Lee,Patrick TI - Ethics of embryonic stem cells SN - 1533-4406 PY - 2004///1020 KW - Beginning of Human Life KW - Embryo Research KW - ethics KW - Embryo, Mammalian KW - Humans KW - Quercus KW - Seeds KW - Trees KW - Value of Life N1 - Publication Type: Comment; Letter UR - https://doi.org/10.1056/NEJM200410143511621 ER -