Word: normale
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Dates: during 1990-1999
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After a year of gathering statistics and data from around the country, the four concluded that two of the major strategies used to increase normal deliveries are not always safe alternatives to the caesarean method. Their findings were published last week as part of an opinion piece in the New England Journal of Medicine...
Overlooked in the arguments about the morality of artificially reproducing life is the fact that, at present, cloning is a very inefficient procedure. The incidence of death among fetuses and offspring produced by cloning is much higher than it is through natural reproduction--roughly 10 times as high as normal before birth and three times as high after birth in our studies at Roslin. Distressing enough for those working with animals, these failure rates surely render unthinkable the notion of applying such treatment to humans...
Moreover, there is a lot we do not know about the effects of cloning, especially in terms of aging. As we grow older, changes occur in our cells that reduce the number of times they can reproduce. This clock of age is reset by normal reproduction during the production of sperm and eggs; that is why children of each new generation have a full life span. It is not yet known whether aging is reversed during cloning or if the clone's natural life is shortened by the years its parent has already lived. Then there is the problem...
...outward appearances, Ashanthi ("Ashi") DeSilva is a normal, healthy 12-year-old who loves sports and would rather play basketball than do her seventh-grade homework. But Ashi holds a unique place in medical history: she is the first recipient of successful gene therapy...
Over the next two years this procedure was repeated a dozen or so times on the little patients. For Ashi it went on until the level of ADA in her bloodstream was 25% of normal, more than enough to protect her. As a precaution mandated by the FDA, she continued to receive weekly doses of PEG-ADA during her gene treatments...