cancer isn't contagious?

iScience

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Posts: 78

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9 years ago

they say cancer isn't contagious but doesn't that depend on whether or not it's in the blood? say cancer spread throughout and it's in the bloodstream. someone coughs up blood into your eyes, or on your food right before you eat it and swallow it (lol) wouldn't this leave possibilities?

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Jinamgo

wrote...

9 years ago

The only transmittable cancer i know of is found in the population of Tasmanian devils. These poor devils are so imbread that much of their DNA is identical. These creatures are also highly aggressive, so when one Tasmanian devil bites another, it passes on these cancerous cells, which are then not recognized as foreign.

However, this is the only example i know of. Other than this specific isolated case, cancers are not "contagious".

This artical speaks of one other type: canine transmissible venereal tumor (CTVT)

Source http://www.nature.com/onc/journal/v27/n2s/abs/onc2009350a.html

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bio_man

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bio_man

wrote...

Educator

9 years ago

Cancer is not contagious. Even if it were, it would elicit an immune response in the recipient.

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iScience Author

wrote...

9 years ago

curious, if the transmit host and recipient host had the same blood type what other factors differentiate foreign cell from host cell?

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bio_man

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Educator

9 years ago

Still wouldn't work. Your cells have custom self-antigens that no one else has.

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