Véronique Fre ́ meaux-Bacchi

Soluble CD21 (sCD21) forms biologically active complexes with CD23: sCD21 is present in normal plasma as a complex with trimeric CD23 and inhibits soluble CD23-induced IgE synthesis by B cells.

M. Kazatchkine, J. Bonnefoy, V. Frémeaux-Bacchi, 1998, International immunology.