Michael has a rare immunological condition that prevents B cell maturation. His doctors first diagnosed him by looking at the levels of secreted immune factors in the blood. Which of the following secreted factors was missing in Michael's blood?
A. Type 2 interferons
B. Colony-stimulating factors
C. Antibodies
D. Interleukin 2
E. Type 1 interferons
Answer: D
Anatomy & Physiology
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Anatomy & Physiology