Where do T cells mature in（）
A. Spleen
B. Lymph nodes
C. Lymph tissue
D. Bone marrow
E. Thymus
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The functions of thymus include（）
A. Is the site of T cell maturation
B. Is the site that T and B cells reside in
C. Is the site of immune response to antigens
D. Possesses the function of Immune regulation
E. Filtering blood
Which organs are central immune organs（）
A. Spleen
B. Lymph nodes
C. Lymph tissue
D. Thymus
E. Bone marrow
What part of lymph nodes do B cells reside in（）
A. Lymphoid follicle
B. peripheral lymphoid sheaths
C. Paracortex
D. Cellular cords
E. Central arterial
Following description about immunity , which is NOT correct（）
A. Immunity can protect our body from disease
B. Only microbes can induce immune system to produce immunity
C. Animal serum can stimulate human immune system to produce immunity
D. All immunities are benefit to our body
E. Baby can get immunity from mother
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