Changes

Primary (or central) lymphoid tissues can also be referred to as primary lymphoid organs. Maturation of [[Lymphocytes|lymphocytes]] and [[Leukopoiesis#Lymphopoiesis|lymphopoiesis]] occurs in the primary lymphoid tissues, with different tissues responsible for maturing different types of [[Lymphocytes|lymphocyte]].The primary lymphoid tissues are:

Primary (or central) lymphoid tissues can also be referred to as primary lymphoid organs. Maturation of [[Lymphocytes|lymphocytes]] and [[Leukopoiesis#Lymphopoiesis|lymphopoiesis]] occurs in the primary lymphoid tissues, with different tissues responsible for maturing different types of [[Lymphocytes|lymphocyte]].The primary lymphoid tissues are:

*[[Bone Marrow - Anatomy & Physiology|Bone marrow]]

*[[Bone Marrow - Anatomy & Physiology|Bone marrow]]

*[[Bursa of Fabricius - Anatomy & Physiology|Bursa of Fabricius]]

*[[Bursa of Fabricius - Anatomy & Physiology|The Bursa of Fabricius]]

*[[Thymus - Anatomy & Physiology|Thymus]]

*[[Thymus - Anatomy & Physiology|The Thymus]]

*[[Haematopoiesis#Hepatic Phase|Foetal Liver]]

*[[Haematopoiesis#Hepatic Phase|The Foetal Liver]]

Secondary (or peripheral) lymphoid tissues or secondary lymphoid organs provide a site for immune responses to occur and are populated by relatively mature [[Lymphocytes#T cells|T cells]] and [[Lymphocytes#B cells|B cells]], [[Macrophages|macrophages]] and dendritic cells with each tissue providing a different environment.The secondary lymphoid tissues are:

Secondary (or peripheral) lymphoid tissues or secondary lymphoid organs provide a site for immune responses to occur and are populated by relatively mature [[Lymphocytes#T cells|T cells]] and [[Lymphocytes#B cells|B cells]], [[Macrophages|macrophages]] and dendritic cells with each tissue providing a different environment.The secondary lymphoid tissues are: