Which of these types of immunity is most affected in hypogammaglobulinemia?
a. Passive natural immunity
b. Cell-mediated immunity
c. Passive active immunity
d. Humoral immunity
ANS: D
Hypogammaglobulinemia is characterized by the absence or deficiency of one or more of the five classes of immunoglobulins from defective B-cell function. Humoral immunity is called antibody-mediated immunity and involves antibody production.
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