Phenotypic similarity of anti-αGal receptor-bearing B cells in GalT^−/− and GalT^−/−Cr2^−/− mice. PerC cells were stained with the indicated antibodies and Gal-BSA (top) or BSA (bottom) conjugated with Cy5 fluorochrome. Shown are representative FACS plots of PerC cells gated for CD19⁺ lymphocytes. Anti-αGal receptor-bearing cells in both GalT^−/− and GalT^−/−Cr2^−/− mice were CD19⁺CD5⁻CD21⁻Mac1^+/low.