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Thursday, April 10, 2003The second of two cloned endangered cattle-like animals was euthanized Tuesday because it was abnormally large and had developed health problems, the scientist overseeing the cloning said. Some of the problems associated with cloning: To create the banteng, scientists inserted DNA from the dead banteng's skin cells into egg cells from closely related domestic cows, producing embryos. The process created 45 embryos, which were transferred into the wombs of 30 cows at Trans Ova Genetics in Iowa. Of those cows, 16 conceived, and two pregnancies came to term. ...Abnormally large newborns are a common problem with cloned animals, and one of the many factors making scientists wary of cloning humans. Although the large banteng seemed healthy at birth, Advanced Cell Technologies told reporters, it quickly took a turn for the worse and was euthanized for humanitarian reasons. Now you know why we haven’t seen any human clones. posted by Sydney on 4/10/2003 07:35:00 AM 0 comments 0 Comments: |
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