Blood, sphingosine-1-phosphate and lymphocyte migration dynamics in the spleen.
The spleen, the largest secondary lymphoid organ, has long been known to play important roles in immunity against blood-borne invaders. Yet how cells migrate within the spleen to ensure fast and effective responses is only now coming to light. Chemokines and oxysterols guide lymphocytes from sites of release at terminal arterioles into the lymphocyte-rich white pulp. Sphingosine-1-phosphate (S1P) and S1P-receptor-1 (S1PR1) promote lymphocyte egress from white to red pulp and back to circulati...Expand abstract
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