4. What is the mode of inheritance in Chediak–Higashi syndrome?
A) Autosomal dominant
B) X-linked
C) No specific mode of inheritance
D) Autosomal recessive

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

6. The defective gene in leukocyte adhesion deficiency is responsible forencoding which protein?
A) B chain of an integrin
B) Complement protein
C) Myeloperoxidase
D) T-cell signaling protein