An immunochemical procedure for the purification of rat class I antigens (RT1.A/RT1.E) from detergent-solubilized erythrocytes.

An immunochemical procedure using two immunoaffinity columns for the isolation of rat Class I antigens from detergent-solubilized DA erythrocytes is described. The protocol yields a pure Class I preparation as assessed by silver staining of sodium dodecyl sulfate-polyacrylamide gels and comparison of the amino acid composition with that previously determined for H-2K/D. The antigen preparation is capable of specifically blocking the hemagglutination of DA erythrocytes by Class I-specific alloantiserum.