The claim is so dramatic and startling that some biologists, perhaps mindful of the recent flap over test-tube atomic fusion, have been wary of taking it at face value. But an experiment reported by researchers at the University of Rome and at that city's Institute of Biomedical Technology may mean that the genetic engineering of animals -- grafting characteristics from one organism onto another -- has taken a major step forward.
Instead of using the conventional technique of painstakingly inserting / foreign genes into an egg cell with a tiny needle, the scientists simply bathed sperm cells in a solution of...
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