August 14, 2012 5:00 AM

Penn researchers enlist dogs in battling human cancers

Sasha is still spunky at 12 — a white dog with a smattering of black, floppy ears and a sweet face. Even after she lost her right foreleg to bone cancer, her owners said, she could jump and catch a Frisbee. Unfortunately, in nearly all cases like Sasha’s, the surgery offers just a short respite before the cancer comes roaring back. Her only hope now lies with an experimental treatment being developed at the University of Pennsylvania.

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