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Definition: a type I transmembrane protein found on lymphocytes, neutrophils, monocytes, macrophages, some B cells, dendritic cells, and natural killer cells that appears active in signal transduction; expressed in some patients with B-cell chronic lymphocytic leukemia, most with acute nonlymphocytic leukemia, and some with hairy cell leukemia.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.