Name the two primary lymph tissues/organs.

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Multiple Choice

Name the two primary lymph tissues/organs.

Lymphocytes complete their development in primary lymphoid tissues. In humans, B cells mature in red bone marrow, while T cells mature in the thymus. The spleen, lymph nodes, tonsils, and MALT are secondary lymphoid tissues where mature lymphocytes encounter antigens and mount responses, rather than where they finish maturing. So the two primary lymphoid organs are red bone marrow and the thymus.

Lymphocytes complete their development in primary lymphoid tissues. In humans, B cells mature in red bone marrow, while T cells mature in the thymus. The spleen, lymph nodes, tonsils, and MALT are secondary lymphoid tissues where mature lymphocytes encounter antigens and mount responses, rather than where they finish maturing. So the two primary lymphoid organs are red bone marrow and the thymus.

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