Scientists working with rhesus monkeys found a biochemical obstacle that
 would make cloning attempts with human embryos difficult, if not impossible.
 Gerald Schatten at the University of Pittsburgh and his co-workers found
 that during cloning, proteins crucial to normal cell division were lost
 from the cell. Schatten, formerly with the Oregon National Primate Research
 Center, said that caused the cloned embryos to divide a few times, stall
 and then die. 

 Richard L. Hill: 503-221-8238; richardhill@news.oregonian.com 


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