TY - GEN AU - Hayden,Erika Check TI - Obama overturns stem-cell ban SN - 1476-4687 PY - 2009///0318 KW - Embryo Research KW - economics KW - Embryonic Stem Cells KW - Humans KW - National Institutes of Health (U.S.) KW - United States N1 - Publication Type: News UR - https://doi.org/10.1038/458130a ER -