Paracortex

From Wikipedia, the free encyclopedia

Paracortex is the portion of a lymph node immediately surrounding the cortex. Unlike the cortex, which has mostly B cells, the paracortex has mostly T cells. Lymphocytes enter the lymph nodes through specialised high endothelial venules found in the paracortex.

[edit] External links

• Histology at BU 07102loa - "Lymphoid Tissues and Organs: lymph node, cortex and medulla"
• Diagram at le.ac.uk
• Slide at iupui.edu

v • d • e Immune system: Lymphatic system (Lymph, Lymphocytes) Primary Bone marrow – Thymus (Hassall's corpuscles) Secondary: Spleen (blood) Hilum – Trabeculae Red pulp (Cords of Billroth, Marginal zone) White pulp (Periarteriolar lymphoid sheaths, Germinal center) Trabecular arteries – Trabecular veins Secondary: Lymph nodes (extracellular fluid) Subcapsular sinus – Paracortex – Lymph vessels – High endothelial venules – Germinal center Secondary: MALT (mucosa) GALT – Peyer's patches – Germinal center