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Antigens, CD21

Molecular sites on or in B-Lymphocytes, Follicular Dendritic Cells, lymphoid Cells, and Epithelial Cells that recognize and combine with Complement C3d. Human Complement Receptor 2 (CR2) serves as a receptor for both C3dg and the gp350/220 Glycoprotein of Herpesvirus 4, Human, and binds the monoclonal antibody OKB7, which blocks binding of both Ligands to the receptor.