Cancer is no joke. It’s the second most common killer in the
U.S. (after heart disease), its origins often unknown. It can grow
silently, undetected until there’s little hope of escaping its fatal grip.
There’s a bit of an irony then that most cancer research organizations test
possible cures on innocent animals, inflicting the type of insufferable pain
we ourselves are trying to avoid. According to the American Anti-Vivisection
Society, rats and mice are the most common victims: