The specific foreign substances that an individual's immune system has the ability to recognize and resist is determined by:

The specific foreign substances that an individual's immune system has the ability to recognize and resist is determined by:




A) individual exposure to the specific foreign substance
B) individual genetic makeup
C) the total number of lymphocytes present at a given time
D) the total number of macrophages at a given time
E) the total number of self-antigens at a given time




Answer: B


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