Trabecular sinuses

In the lymph node cortex, the subcapsular sinus drains to trabecular sinuses. Lymph then flows into the medullary sinuses.

Bone marrow	Hematopoietic stem cell

Thymus	Cortex Medulla Hassall's corpuscles

Spleen	structural: Hilum Trabeculae Diaphragmatic surface of spleen Visceral surface of spleen Red pulp Cords of Billroth Marginal zone White pulp Periarteriolar lymphoid sheaths Germinal center blood flow: Trabecular arteries Trabecular veins

Tonsils	Palatine Lingual Pharyngeal Tubal Tonsillar crypts Waldeyer's tonsillar ring

Lymph nodes	lymph flow: Afferent lymph vessels Cortical sinuses Medullary sinuses Efferent lymph vessels T cells: High endothelial venules B cells: Primary follicle/Germinal center Mantle zone Marginal zone layers: Capsule/Trabeculae Subcapsular sinus Cortex Paracortex Medulla (Medullary cord) Hilum

MALT	GALT Peyer's patch Germinal center

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