Non-targeted effects

Effects arising in cells that are not irradiated themselves but result from signals received from neighbouring cells that are irradiated. Bystander effects mediated in the body by the immune system are termed abscopal effects.

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from ICRP Publication 131, 2015

Effects arising in cells that are not irradiated themselves but their neighbouring or parental cells are irradiated, including bystander effects and the induction of genomic instability.