Word: egges
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
When the 25-year-old woman saw her healthy newborn son, she wept tears of joy and relief. A typical reaction, one might say. But the circumstances were extraordinary. Five years ago the mother had been diagnosed as prematurely menopausal: her ovaries had ceased to release eggs or to produce the hormones needed to sustain a pregnancy. The child she had carried for nine months was the genetic offspring of another woman, who had donated an unfertilized egg. The birth of the world's first "donor-egg baby" in November, which was announced last week by scientists in Australia...
...British journal Nature by a team of researchers led by Dr. Carl Wood at Melbourne's Monash University, owes much to the experience of cattle and sheep breeders. They have long transferred embryos from prize animals to poorer stock in efforts to upgrade their herds. The human egg in the Australian experiment came from a 29-year-old woman who was trying to conceive. Although her ovaries were healthy, the fallopian tubes connecting the ovaries with the uterus were blocked...
Doctors were trying to help her become pregnant by using a fertilization method introduced in 1978. The so-called test-tube-baby technique bypasses the sealed passages by mating the wife's egg with the husband's sperm in a glass Petri dish. The resulting embryo is implanted in the woman's womb...
...donor's egg was fertilized in a Petri dish using sperm obtained from the recipient's husband. Thirty hours later, when the egg had cleaved into two cells, it was inserted into the uterus of the menopausal woman. Her body adjusted so naturally to the pregnancy that she has even been able to breast-feed her son. One sad note amid all the celebration: the woman who donated the egg failed to become pregnant. She still does not know that in one sense, at least, she has become a mother...
...Australian experiment is expected to be followed by a birth in California this month that involves another kind of egg transfer between two women. The difference is that the California baby was conceived not in a Petri dish but in the body of the woman donating the egg. In the method used by Dr. John Buster and his team at Harbor/U.C.L.A. Medical Center in Torrance, a woman with healthy ovaries was artificially inseminated with sperm from the husband of an infertile woman. Five days after fertilization, the donor's uterus was flushed with a nutrient solution and the embryo...