7. What is the characteristic feature of cyclic neutropenia?
A) Neutrophil chemotaxis
B) Very low neutrophil count for 3-6 days in a 21-day cycle
C) Myeloperoxidase deficiency
D) Defective neutrophil esterase

8. What is the primary clinical manifestation of myeloperoxidasedeficiency?
A) Altered neutrophil chemotaxis
B) Little clinical importance
C) Decreased oxygen consumption
D) Defective intracellular killing

9. What is the most common secondary immunodeficiency?
A) Common variable hypogammaglobulinemia
B) Liver failure
C) Malnutrition
D) Acquired immunodeficiency syndrome (AIDS)

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