Le site de vulgarisation scientifique de l’Université de Liège. ULg, Université de Liège
Primary lymphoid organ

Organs where specific cells called lymphocytes mature. Among these organs are: the thymus gland, bone marrow, lymph nodes, amygdales, Peyer’s patches (in the small intestine), the appendix and some parts of the skin and mucous membrane. (source : vulgaris-medical)

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