My question is this: I have been doing a lot of research on radiation, radiation sickness, and nuclear warfare for my writing, and I have to say I find it fascinating, especially the effect it has on the immune system. So my question is this: If one were to survive a nuclear blast close to the detonation site due to cell abnormality (this is sci-fi after all), would it be plausible to say that the radiation in high levels (10+ grey) could cause a chronic illness of the immune system? Something a bit like AIDS I suppose? I know permanent skin damage is a side effect of radiation (scarring, weeping, etc.), but I would like to know if you think a permanent "disease", if you like, could occur from radiation poisoning, or if this sounds too far fetched? Thank you.