H-Y antigen is not expressed on purified rat erythrocytes.

The presence of H-Y antigen on male rat erythrocytes was investigated using a high-titre H-Y antiserum in both ELISA, cellular absorption and syngeneic male to female erythrocyte transfusion studies. No evidence was found to suggest that H-Y antigen is expressed on rat erythrocytes. These data are in accord with recent findings of other investigators studying mouse H-Y serology.