4. What is the characteristic feature observed in leukocytes ofindividuals with Chediak-Higashi syndrome?
A) Enhanced ability to kill ingested microorganisms
B) Defective neutrophil chemotaxis
C) Presence of large lysozomal granules
D) Improved degranulation rate of leukocytes

5. Which immune cells are affected in Job's syndrome?
A) B cells
B) Helper T cells
C) Neutrophils
D) Macrophages

6. Which molecule is missing in leukocyte adhesion deficiency?
A) C1 inhibitor
B) B cells
C) B chain of an integrin
D) Defective neutrophils