Initially, it claimed to concentrate small numbers of fetal cells from the woman's blood. (newscientist.com)
He and his colleagues were trying to make clones from fetal cells and used adult ones as experimental controls — not expecting that they would actually generate an embryo of their own. (scientificamerican.com)
Scientists in other countries are more likely to work with fetal cells in efforts to modify an animal's genetic makeup so that its milk contains drugs for human use. (sciencemag.org)