Our precious pooches can carry one of many strangest diseases identified to exist—a sexually transmitted type of cancer that’s jumped from host to host for 1000’s of years. Now, a big group of researchers says they’ve unpacked the historical evolutionary past of this disease, all the way behind to the first dogs by which it arose. And it’s even weirder than anticipated.
Cancers—the mutated, uncontrollable, and dangerous development of a body’s cells—are distinctive. If you and somebody else have a selected sort of breast cancer, these cells will behave in similar methods. However, your cancer cells belong to you alone, and so they’ll be noticeably totally different from the cancer cells of another individual. You can also actually infect someone with your cancer, mostly as a result of our immune system can normally acknowledge and destroy foreign human cells.
That stated, there have been rare examples of cancer transmission in people. These have largely occurred to individuals with poor immune systems who received organ transplants from a donor with cancer, or from mom to baby in the womb. However, they’re short-lived, isolated cases, with cancer never expanding further to others.
But, some cancers in some animals have been able to tackle an infectious life on their very own, having “learned” the way to escape their original hosts and spread freely throughout the population as a bacteria or virus does.