The use of animals in medical research has been a hotly contested moral issue for years. In 2010, the European Union banned virtually all research on great apes (gorillas, bonobos, orangutans, and chimpanzees.) In 2013 the National Institutes of Health issued guidelines, based on a 2011 Institute of ...

On August 4, the National Institutes of Health called for public comment on proposed changes to its guidelines governing the funding eligibility of research involving human-nonhuman chimeras. Although the term chimera has a broad interpretation, the NIH proposal addresses a particular kind of chimera...