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USMLE Exam Prep

Category - Free USMLE Practice Test Questions

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A decrease in which of the following is most directly related to the immunological failure?

antibody activity
cytotoxic T-cell function
mast cell degranulation
platelet aggregation

Explanation

Answer: A - A deficiency in immunoglobulin production or activity is directly related to susceptibility to common extracellular microbes such as streptococci.

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