Grouped isoagglutination is not limited to man, but is much more widespread than has been hitherto suspected. It occurs in the bloods of steers and rabbits. It seems probable that it will be found to occur in the bloods of other animals. Just how many of the isoagglutinins and the isoagglutinable substances in different species are respectively identical is still to be determined. The work is being continued with other animals.

This content is only available as a PDF.