Word: vitro
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Dates: during 1990-1999
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...Steven and Maureen Kass of Amityville, N.Y., bring something new to the issue: they're wrestling with the question five years after their divorce. The Kasses have five frozen embryos, made from his sperm and her eggs, left over from their married days of trying to conceive by in-vitro fertilization. Maureen, who is 40 and childless, wants to use them to have children. Steven, 38, is adamant that he doesn't want kids with his ex-wife. He is seeking to donate the embryos to research. Their fight has ended up in New York's highest court, which hears...
Your report on the birth of babies from long-frozen embryos [SCIENCE, March 2] may lead readers to think that in-vitro-fertilization clinics are less than forthcoming to parents about the fate of unused embryos. In IVF clinics, all of a patient's embryos are accounted for. The truly pressing issue surrounding frozen embryos is abandonment. IVF clinics throughout the world often become the guardians of unclaimed frozen embryos because couples lose contact with the lab either by choice or by not supplying forwarding addresses. Clinics must then decide whether to destroy the embryos after a certain period...
...company, Fertility & Genetics Research Inc., seemed promising. But the procedure was cumbersome--it involved flushing embryos out of the uterus of the egg donor--and was soon eclipsed by in-vitro fertilization. Ultimately the venture failed. Indeed, Seed in recent years appears to have suffered some financial reversals. Until last summer he and his third wife Gloria lived in a two-story Victorian house in Oak Park. But the bank foreclosed on their $341,000 mortgage, and they were forced to move to a modest bungalow in nearby Riverside. "I had a beautiful house," sighs Seed. "It's very difficult...
...same holds true for many other experimental therapies emerging from the lab. One of the most promising is a technique that keeps embryos growing for a few extra days in a Petri dish. Until recently, clinicians had to put in-vitro embryos into the uterus when they were just one or two days old and relatively fragile. After that, the embryos' metabolism changes, rendering standard growth mixtures useless for nourishing them. That's why clinics insert several at once, which raises the odds of success but often produces triplets, quads and even quints...
Australian embryologist David Gardner and his colleagues at the Colorado Center for Reproductive Medicine in Englewood have come up with a mixture that keeps cells growing in vitro for up to five days, making it much easier to pick out the strongest embryos. So instead of three or four or five embryos, doctors can implant one or two. The technique could be a standard practice by next spring...