[cheerfulgreek]

I have a question for BigRedBeta. Last night I was watching the Discovery Channel and it was talking about how fetal cells may be able to keep breast cancer from developing. I don't remember everything, just some of the things that grabbed my attention. It said that fetal cells surviving in a mother's tissues may fight off breast tumors. I myself also read that women with children have a lower risk of getting breast cancer than childless women. It also said that during pregnancy, a small number of fetal stem cells cross the placenta into the mother's bloodstream and can survive for decades in her skin, liver, brain, and some other organ that I can't remember. I think it was the spleen. But anyway, it was just basically saying that fetal cells repair damage to some of the tissues. Have you heard of anything like this in your field of study?