Abstract
Summary
Two modifications of a staphylococcal hemagglutination test, utilizing protease for treatment of erythrocytes or Coombs'antiserum, are described and are more sensitive than the basic hemagglutination method for titration of staphylococcal antibodies in human gamma globulin and serum. These antibodies probably are directed against an antigen of the Rantz type, as the antigen is heat stable at acid and labile at alkaline pH and since both Staphylococcus aureus and B. subtilis, in contrast to E. coli and Staphylococcus citreus, remove antibodies from human gamma globulin. The significance of the data is discussed.
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