The site for the differentiation and maturation of human B cells is
A. Bone marrow
Bursa of Fabricius
C. Spleen
D. Thymus
E. Lymph nodes
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When the function of bone marrow is deficient
A. The cellular immunity is normal and the humoral immunity is defective
B. The cellular immunity is deficient and the humoral immunity is normal
C. It may cause dysplasia of thymus and the spleen lymph follicles develop normally
D. The development of thymus is normal and the spleen may appear lymphofollicular dysplasia
E. The cellular immunity is deficient, and the humoral immunity is deficient as well
The organs where mature lymphocytes settle down include
A. Thymus
B. Pancreas
C. Bursa of Fabricius
D. Liver
E. Lymph nodes
The functions of spleen don’t include
A. It provides a place for T and B cells to settle down
B. It can produce secretory IgA and mediates mucosal immunity
C. It provides a place for immune response
D. Hematopoiesis
E. Blood storage
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