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Definition: a type I transmembrane protein present on thymocytes, T cells, B cells, natural killer cells, monocytes, neutrophils, platelets, endothelial cells, epithelial cells, fibroblasts, placenta, and sperm that protects against complement-mediated damage.

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