Word: petry
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Dates: during 1990-1999
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...issue is the balance between two very different types of research: basic and applied. Basic scientists pursue knowledge for its own sake. They may study the sex lives of bacteria growing in Petri dishes or use giant accelerators to smash protons together to see what kinds of subatomic debris come out. Applied scientists, in contrast, have a social goal in mind. They take the knowledge gained from basic science and try to apply it to solving a problem or creating a new technology. They may use their understanding of light waves to construct an optical computer or test a drug...
...experiment reported last week involved an English husband and wife who already had a child with cystic fibrosis and were worried about having another. Doctors followed the standard in vitro fertilization protocol, using hormones to stimulate the production of extra eggs, which were then mixed with sperm in a Petri dish. Two of the resulting embryos tested positive for cystic fibrosis. The rest were O.K., and two of them were implanted in the mother's womb. One became Chloe O'Brien, a healthy child who will neither get cystic fibrosis nor pass it on to her offspring...
Human cells of various types have long been successfully studied in laboratory petri dishes. Now, with the help of research performed at a Harvard Medical School teaching hospital, doctors can remove skin cells from a patient, culture them to create a new sheet of skin, and graft them back onto the patient to heal wounds...
...University of Texas at San Antonio. Asch was trying to find a simpler way to do IVF, one that would not require the skills of an embryologist, when he hit upon the procedure he called gamete intra-Fallopian transfer, or GIFT. Rather than attempting fertilization in a Petri dish, he simply loaded the sperm and eggs (known to biologists as gametes) into a fine pipette and inserted them into the Fallopian tube, where he hoped they would take care of business by themselves. Not only did they fertilize, but they implanted as well -- at a much higher rate than...
...frozen for later use, but not eggs, which quickly lose their viability when manipulated outside the body. But Dr. Kwang Yul Cha, an endocrinologist at Cha Women's Hospital in Seoul, reports that his team has produced two pregnancies from eggs matured not in an ovary but in a Petri dish -- a major step in the eventual perfection of egg freezing. Many scientists expect that the procedure will be available within the next few years...