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[darkangel218]

35. From NPR

According to the latest data from the Center for Disease Control and the American Cancer Society, more than ten million Americans are living with some form of cancer. And while there are new drugs and treatments constantly being tested, some with good rates of success, cancer is still largely an enigma. Who gets it, and why? Those of us who are cancer-free take quiet solace, perhaps, in the assumption that cancer is not contagious. But is that really true?

Scientists studying cancer in two very different animal species, Tasmanian devils and dogs say they found evidence that some cancer cells are being passed between animals through physical contact, like sex or biting. If they're right, this means the cancer is literally jumping from one animal to the other, much like a parasite. Now, important note, we're talking about animals here, not humans, but it does raise some concerns about how cancer is evolving.

http://www.npr.org/templates/story/story.php?storyId=88131574