Human CD21/CR2 is also the receptor for the EB viral membrane glycoprotein gp350/gp220 and HIV-1. CD21/CR2 shows various biological characteristics when it binds to ligand with its distinct domains.

• 同时人CD21/CR2也是EB病毒膜表面糖蛋白gp350/gp220、HIV-1等的受体,CD21/CR2以不同的结构域与这些配体结合,表现出多种生物学特性。