Sarthaks Test
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Give one significant difference between primary lymphoid organs and secondary lymphoid organs. Give one example of each.

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Primary lymphoid organs – In these organs, immature lymphocytes differentiate into antigen- sensitive lymphocytes e.g., Bone marrow, Thymus Secondary lymphoid organs – The matured lymphocytes undergo proliferation and differentiation e.g., lymph nodes, spleen, tonsils.

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