Nov 18, 2015 01:41 PM
'"There's an early developmental window during which you can be exposed to bacteria and they're seen as friendly – the immune system incorporates them and says, 'Yes this is good, this is 'self,' and it will not mount an immune response," said Michael D. Rosenblum, MD, PhD, assistant professor of dermatology at UCSF and senior author of a new paper on the research. "But if you introduce the same bacteria for the first time later in life, the response is completely different. The immune system says, 'This is bad, and we need to get rid of it.'" http://medicalxpress.com/news/2015-11-sk...early.html