So, in contrast to the nonspecific defenses, the immune system targets the specific invader, distinguishing it from other, similar, foreign bodies 2. The immune system is capable of recognizing and responding to millions of different kinds of invaders, each one of which is recognized by its specific antigenic markers 3. Infant immune system is not fully operational, so this is very important for the first few months ii. Yet another reason why breast milk is best for infants iii. Overview of humoral and cell-mediated responses 1.
T cells function in the cell-mediated immune response iii.
B and T cells both have antigen receptors on them v. These are, basically, antibodies, and they will respond to specific antigens vi. Disorders of the immune system A. Autoimmune diseases 1. The immune system turns against itself 2. The reasons why are not well-understood 3.