Edont Knoff
Registered Senior Member
We (humans) are populated by bakterias on the outside and on the insides (e.g. the intestines). It seems many of these bacteria are important to keep us healthy.
Other bacterias are bringer of deseases and illness.
How does our immune system tell the good from the bad bacteria? In school I was tought that our immune system attacks everything in our bodies which doesn't have the correct markers, and this is be the reason that transplated organs are rejected. But our immune system still tolerates some bacteria (propbaly for a good reason), and I can hardly imagine that these bacteria have the cell markers that the normal body cells have and which tells the immune system "I'm part of this individual, as you are".
So how does the immune system decide which bacterias must be attacked, and which are tolerated to live in or on us?
Other bacterias are bringer of deseases and illness.
How does our immune system tell the good from the bad bacteria? In school I was tought that our immune system attacks everything in our bodies which doesn't have the correct markers, and this is be the reason that transplated organs are rejected. But our immune system still tolerates some bacteria (propbaly for a good reason), and I can hardly imagine that these bacteria have the cell markers that the normal body cells have and which tells the immune system "I'm part of this individual, as you are".
So how does the immune system decide which bacterias must be attacked, and which are tolerated to live in or on us?