抄録
1. Seven staphylococcal coagulase types were differentiated by cross neutralization tests with anticoagulase rabbit sera and normal human sera."Newman" coagulase manifested the cross-reaction with that of Stp.-12, but each of the other coagulases was antigenically specific.
2. The distribution of anticoagulases was investigated in 74 normal adult human sera with 5 different coagulases, and more than one types of anticoagulase was demonstrated in 56 of the 74 sera tested.
3. In normal human sera, a parallel relationships was recognized between the extent of distribution of anticoagulase among a population and the magnitude of antibody response.
