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.
Red pulp (Cords of Billroth, Marginal zone)
White pulp (Periarteriolar lymphoid sheaths, Germinal center)
T cells: High endothelial venules
B cells: Primary follicle/Germinal center - Mantle zone - Marginal zone
Lymph node capsule - Subcapsular sinus - Cortex - Paracortex - Medulla (Medullary cord) - Hilus
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