Which statement provides the best explanation of the need for self-tolerance screening of lymphocytes?
A) The process which generates the vast array of diverse antigen receptors is a random process that could produce receptors which will bind to the body's own tissues.
B) Self-tolerance involves "self" lymphocytes which bind to and form a protective layer over all body tissues.
C) Lymphocytes which would attack the body's own tissues are never generated.
D) The process which generates the vast array of diverse antigen receptors is a highly-controlled process, so the generation of receptors which can bind to the body's own tissues is a rare occurrence due to a genetic mutation.
E) It is necessary to have some lymphocytes with receptors that are self-tolerant to respond to intracellular infections by viruses.
Answer: A
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