Skin's immune peacekeepers discovered
Monday, October 17, 2011 - 18:30
in Health & Medicine
There are more bacteria living on our skin and in our gut than cells in our body. We need them. But until now no one knew how the immune system could tell that these bacteria are harmless. Researchers in Sydney have discovered a set of peacekeepers -- immune cells in the outer layers of our skin that stop us from attacking friendly bacteria.