Which of the following organ is not involved in elicitation of immune response?
A
Thymus
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B
Spleen
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C
Lymph nodes
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D
Brain
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Solution
The correct option is D Brain The lymphatic system is part of the vascular system and it is an important part of the immune system, comprising a large network of lymphatic vessels that carry a clear fluid called lymph. The lymphoid tissue includes -
Thymus- a primary lymphoid organ which is involved in T-cell maturation.
Spleen- It synthesizes antibodies and removes antibody-coated bacteria from the body.
Lymph nodes- It is an organized collection of lymphoid tissue, through which the lymph passes on its way back to the blood.
A brain is a part of the central nervous system and it is not responsible for elicitation of the immune response.