In which lymphoid organ, B cells mature?

Thymus

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Spleen

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Bone marrow

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None of the above

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Solution

The correct option is C Bone marrow
B cell activation occurs in the secondary lymphoid organs, such as the spleen and lymph nodes.
In mammals, B cells mature in the bone marrow, then they migrate through the blood to secondary lymphoid organs, which receive a constant supply of antigen through circulating lymph. Hence, in Bone marrow B cells matures.
So, the correct answer is 'Bone marrow'.

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