Word: egges
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...more like his very political predecessor, turning White House meetings into philosophy seminars. Last Wednesday, while conferring with doctors on the patients' bill of rights, Bush shifted to stem cells. That morning he had been disturbed to read that a Virginia research institute was mixing sperm and egg donations to create embryos solely for the purpose of research, opening a new door to yet another roomful of questions about the limits of science. Until last week, most people in Washington thought embryonic stem-cell research was confined to embryos left over from couples seeking in-vitro fertilization. At least...
...EMBRYO An egg is fertilized or cloned to form an embryo. The embryo begins to divide...
...FERTILITY CLINICS During in-vitro fertilization, clinics routinely fuse more than one egg with sperm. That way, if implanting a fertilized egg doesn't work the first time, they can try again. This practice has left thousands of unwanted embryos stored in clinic freezers. James Thomson, left, the first scientist to establish a human stem-cell line, used such embryos...
...Melbourne, Australia, medical researchers have fertilized a female mouse's egg without benefit of male sperm; you can do this, it seems, by introducing the egg to genetic material from any cell in the body and giving it a jolt of electricity...
...Embryonic stem cells are controversial. They come from the inner cell mass of a blastocyst, the term for a fertilized egg four days after conception. But while many pro-life advocates stand firm in their opposition to using embryonic cells for research, others, including Senator Orrin Hatch, have cast their lot with the scientific community in favor of continuing research funding. High-profile activists, including actor Michael J. Fox, who suffers from Parkinson?s disease, have appeared before congressional subcommittees urging that research continue. (Stem cell research, of course, will continue on some level no matter what the President decides...