Word: petry
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What brought the research into the human arena was the rapidly developing field of in-vitro fertilization. In clinics popping up around the world, couples who have trouble conceiving can have their sperm and eggs mixed in a Petri dish -- and the resulting embryos transferred to the mother's womb. The process is distressingly hit-or-miss, though, and the odds of a successful pregnancy go up with the number of embryos used. In a typical in-vitro procedure, doctors will insert three to five embryos in hopes that, at most, one or two will implant...
...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...
...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...