Complement Receptor Type 2

**Semantic type:** Amino Acid, Peptide, or Protein|Receptor

**Definition:** Complement receptor type 2 (1033 aa, ~113 kDa) is encoded by the human CR2 gene. This protein plays a role in the activation of complement-mediated immunity.

**Synonyms:** - CD21 - CD21 Antigen - CR2 - Complement C3d Receptor - Cr2 - EBV Receptor - Epstein-Barr Virus Receptor