title: Congress's hybrid problem.
authors.affiliation: Center for Biomedical Ethics, University of Virginia, USA.
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Moreno
mesh_terms: D000818:Animals; D035843:Biomedical Research / Q000191:economics / Q000331:legislation & jurisprudence / Q000379:methods; D002678:Chimera; D004195:Disease Models, Animal; D033041:Embryo Research / Q000191:economics* / Q000331:legislation & jurisprudence*; D035082:Federal Government; D006801:Humans; D012109:Research Support as Topic / Q000331:legislation & jurisprudence*; D013234:Stem Cells; D014481:United States