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Some chimps never recover from stresses of research

Apr 25, 2011 1:02:00 AM - thestate.com
Editor's note: This is the first of three stories from McClatchy Newspaper's Chris Adams exploring the state of controversial medical research using chimpanzees as test subjects. The additional stories are linked below.

Click here to view video accompanying this story.

Donovan the chimp transformed from a friendly ape who "adapts well to peers" to one who beat his female cage-mate so aggressively they had to be separated.

Lira became a "chronic hair plucker," with large barren patches on her body.

Bobby bit and mutilated his own arm, leaving permanent scars. He was so depressed that he slept sitting up, facing the wall of his cage.

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