16. Which immunoglobulin is reduced in common variablehypogammaglobulinemia? A) IgE B) IgA C) IgG D) IgM 17.

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Question:

16. Which immunoglobulin is reduced in common variablehypogammaglobulinemia?
A) IgE
B) IgA
C) IgG
D) IgM

17. What is the effect of AIDS on immune surveillance?
A) High incidence of tumors
B) Enhanced immune surveillance
C) Improved overall immunity
D) Decreased susceptibility to infections

18. What is the main effect of T-cell deficiency in measles?
A) Improved cytotoxic T-cell response
B) Reduced immunoglobulin production
C) Enhanced helper T-cell activity
D) Suppressed delayed hypersensitivity