Maturation of [[Lymphocytes - Introduction|lymphocytes]] ([[Leukopoiesis#Lymphopoiesis|lymphopoiesis]]) occurs in the primary lymphoid tissues, with different tissues responsible for maturing different types of [[Lymphocytes - Introduction|lymphocyte]].
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===Foetal Liver ===
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===[[Bone Marrow]]===
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===Thymus===
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===[[Foetal Liver]]===
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===[[Thymus - Anatomy & Physiology|Thymus]]===
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==Secondary Lymphoid Tissue==
==Secondary Lymphoid Tissue==
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===Lymph Nodes===
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Secondary (or peripheral) lymphoid tissues can also be referred to as lymphoid organs. They provide a site for immune responses to occur and are populated by relatively mature [[:Category:Lymphocytes|T cells and B cells]], [[Macrophages|macrophages]] and [[T cell differentiation|dendritic cells]] with each tissue providing a different environment.