CD23/CD21 and CD40/CD40 ligand (CD40L) interactions have been proposed to be involved in the regulation of IgE synthesis. The purpose of the present study was to investigate the presence and ...

independent of the costimulatory molecule CD21, in amplifying early B cell activation events in response to membrane-bound ligand stimulation. You have full access to this article via your ...

The CD19 protein forms a complex with CD21, CD81, and CD225 in the membrane of mature B cells. Together with the B-cell antigen receptor, this complex signals the B cell to decrease its threshold ...