Joseph J. Mangano has written:

'Low-level radiation and immune system damage' -- subject(s): Health aspects, Health aspects of Low-level radiation, Immunosuppression, Low-level radiation

Because it's very low level radiation.

Ian D. Logan has written:

'The effect of low intensity laser irradiation and low level, low LET ionising radiation on DNAwithin mammalian cells'

Since nobody has answered the answer is obviously "No, nobody cares". But it is an important question. Let's ask how to make \wikianswers get up to speed with changing source articles.

There are in the campaign level "Blood and Iron." It is aprx. level #8 on the campaign.