[sokols]

> but if cancer were easy for the immune system to deal with nobody would die of it.

This made me think, whether it would somehow make sense that cancer cells on another host would be detected by the immune system of that host. Theoretically, these immune cells have different “initialization parameters” so to say and maybe they could show affinity to the foreign cancer cells.

But then again I am not an expert and this is just a pure speculation.

[golem14]

Healthy transplants from other organisms are also attacked…