ecotaxis

Migration of lymphocytes “homing” from the thymus and bone marrow into tissues possessing an appropriate microenvironment. [eco- + G. taxis, order, arrangement]

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eco·tax·is (ekґo-tak″sis) [Gr. oikos house + taxis arrangement] the “homing” of recirculating lymphocytes to specific compartments of peripheral lymphoid tissues, with B cells going to B-dependent areas and T cells to T-dependent areas.