Dogs Carry the Oldest Known Living Cancer

26 Jan 2014 11:06 #1 by ScienceChic
It's treatable with chemotherapy, but can you imagine if human cancers became transmissable? Yikes.

Dogs Carry the Oldest Known Living Cancer
The cancer, which causes genital tumors in dogs and is spread by sexual contact, is 11,000 years old.
Marc Silver
January 25, 2014

Canines are in a rare category when it comes to cancer: They and Tasmanian devils are the only two animals that can transmit it from one individual to another.

A new genetic study reveals that the dog form of the cancer, which causes genital tumors, is 11,000 years old—making it the oldest continuously living cancer.

These cancers break so many rules we thought we [Elizabeth Murchison, study author] understood. For instance, they're able to spread between hosts, and to exist and live in different hosts, despite the immune system, which is supposed to detect non-self tissues and reject them.


"Now, more than ever, the illusions of division threaten our very existence. We all know the truth: more connects us than separates us. But in times of crisis the wise build bridges, while the foolish build barriers. We must find a way to look after one another as if we were one single tribe.” -King T'Challa, Black Panther

The truth is incontrovertible. Malice may attack it. ignorance may deride it, but in the end, there it is. ~Winston Churchill

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