The characteristics of adaptive immunity include
A. Immunological memory
B. No specificity for pathogens
C. Acquired by heredity
D. It includes physical barriers and chemical barriers
E. It works quickly in the early stage of infection
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Dysfunction of immune homeostasis can lead to
A. Immunodeficiency
B. Continuous virus infection
C. Tumor
D. Hypersensitivity
E. Autoimmune diseases
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
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
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