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Thymus

Lymphocytes could be roughly divided into two categories. B cell and T cell.

Though they both originate from the bone marrow, T cell migrate to the" thymus," where it reach maturity while B cell got mature in the bone.

That is, T stands for thymus.

However, B doesn't mean "bone" actually, for B cell was first discovered in the "bursa of Fabricius" in a bird.

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15y ago

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