Amount of detectable KEL glycoprotein on RBCs transfused into immunized WT and FcγR KO animals decreases to 24 hours posttransfusion. (A) Detectable KEL glycoprotein on KEL2 RBCs transfused into in WT, FcγR KO, or C3 KO animals passively transferred with polyclonal anti-KEL (solid line) or saline (shaded histogram); representative plots are shown. (B) Compilation graphs of the MFI of detectable KEL glycoprotein on KEL2 RBCs transfused into WT, FcγR KO, or C3 KO animals, passively immunized with saline or polyclonal anti-KEL. These data are representative of 5 independent experiments, with 3-5 animals/group.