The fact that species with more cells don't get more cancer is known as Peto's paradox. Perhaps it is also true at the tissue level. See http://en.wikipedia.or

The fact that species with more cells don't get more cancer is known as Peto's paradox. Perhaps it is also true at the tissue level. See http://en.wikipedia.org/wiki/Peto%27s_paradox http://en.wikipedia.org/wiki/Peto%27s_paradox