in their cytoplasmic regions. The extracellular domains are 95% identical to the domains of FCGR2A and almost completely identical to the FCGR2C (the other members of CD32 family). It is the only inhibitory type I Fc?R in humans and mice.

Expression

FCGR2B1 is highly expressed by B cells, and its mRNA has also been identified at lower levels on monocytes. FCGR2B2 is highly expressed on basophils

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