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exocytosis |
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exocytosis /exo·cy·to·sis/ (-si-to´sis) 1. the discharge from a cell of particles that are too large to diffuse through the wall; the opposite of endocytosis. 2. the aggregation of migrating leukocytes in the epidermis as part of the inflammatory response.
exocytosis (ek´sōsītō´sis), n the active transport of material from a vesicle out into the extracellular environment. exocytosis 1. the discharge from a cell of particles that are too large to diffuse through the plasma membrane; the opposite of endocytosis. 2. the aggregation of migrating leukocytes in the epidermis as part of the inflammatory response. |
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Collectively, these results suggest that HIV-1 Tat induces a condition of oxidative stress, which mediates cellular secretion of FGF-1, an observation relevant to the pathophysiologic development and progression of AIDS-associated Kaposi's sarcoma. In response to cellular secretions characteristic of inflammatory reactions, the number of ICAM-1 molecules on the surfaces of some mucosal cells increases many fold, to as many as 350 million per cell. |
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