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Question 59 of 70

Q.Both B-cells and T-cells of immune system are produced in

(a) Spleen
(b) Lymphoid nodes
(c) Bone marrow
(d) Thymus
West Bengal WbchseWest Bengal HS (WBCHSE) Board 2025MCQ· 1mImportance★★★★★
84% · 59/70 Questions
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Both B-lymphocytes and T-lymphocytes originate from stem cells in the bone marrow; T-cells then migrate to the thymus to mature.

All lymphocytes (B-cells and T-cells) are produced from pluripotent haematopoietic stem cells in the bone marrow. B-cells complete their maturation in the bone marrow itself (hence the name 'B' for Bursa-equivalent/bone marrow), while the precursor T-cells migrate out of the bone marrow to the thymus, where they mature — but their site of production (origin) fo …

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