Are brain cells part of the immune system?

Outside tissue grafted into most parts of the body often results in immunologic attack; tissue grafted into the central nervous system on the other hand sparks a far less hostile response. read more

There is by the way two-way signaling by neurotransmittors between the central nervous system and the different cells of the immune system. Immune response can for instance be subject to classical conditioning. In that sense, the CNS is at least heavily involved in the immune system. read more

In most parts of the body, antigens – molecules on pathogens or foreign tissue that alert our immune system to potential threats – are presented to white blood cells in our the lymph nodes causing an immune response. read more