Submitted by SnooRegrets2663 t3_ylxnkc in askscience
Liamlah t1_iv3hmo4 wrote
If the recipient is immunosuppressed, yes. Such as an organ donor recipient who takes immune suppressing drugs in order to not reject the donor organ.
Under normal circumstances, your immune system will see the cancer as someone else's cells and mark it for destruction. In the 20th century before medical ethics was really a thing, there were experiments done on prisoners where tumours were transplanted from one person to another. The immune system identified the tumours as foreign, and they became necrotic. Your body is also frequently identifying potential tumours from your own mutated cells and destroying them, when some dysregulated, immortal cells avoid detection by the immune system, then you can send up with a tumour or a cancer.
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