Equine Lymphoreticular System - Horse Anatomy

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Primary Lymphoid Tissue

Maturation of lymphocytes (lymphopoiesis) occurs in the primary lymphoid tissues, with different tissues responsible for maturing different types of lymphocyte.

Bone Marrow

Foetal Liver

Thymus

Secondary Lymphoid Tissue

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 T cells and B cells, macrophages and dendritic cells with each tissue providing a different environment.

Lymph Nodes

Spleen

Mucosal Associated Lymphoid Tissue

Peyer's Patches

Tonsils

Lymphatic Vessels

Lymphatics of Limbs