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  • Title: Structure and functions of gp 140, the C3d/EBV receptor (CR2) of human B lymphocytes.
    Author: Frade R.
    Journal: Mol Immunol; 1986 Nov; 23(11):1249-53. PubMed ID: 2950318.
    Abstract:
    Analysis of the interaction of human C3 fragments with human B lymphoma cell line, led us to isolate gp 140, the C3 receptor of Raji cells. Rabbit anti-gp 140 was prepared against this highly purified receptor. Using these polyclonal antibodies, it was found that: gp 140 is the C3d receptor (CR2) which reacts with the C3d site expressed on C3d, C3dg, C3bi and at a less extent on C3b. Gp 140 is a specific marker of human B lymphocytes; gp 140 is also the Epstein-Barr virus receptor (EBVR); CR2 is a membrane site involved in B-cell regulation; and the C3d/C3dg receptor (CR2) of human B lymphocytes is distinct to the C3dg receptor (CR4) of human neutrophils.
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