ON THE ANTIGENS OF RED BLOOD CORPUSCLES : II. FLOCCULATION REACTIONS WITH ALCOHOLIC EXTRACTS OF ERYTHROCYTES.
1. Flocculation reactions of anti-erythrocyte sera on emulsions of alcoholic extract of blood are described. 2. The reactions are markedly species-specific. 3. Besides the homologous reactions certain others-"heterogenetic"" ones-have been observed, and in this way the existence of new examples of heterogenetic antibodies has been demonstrated. 4. Group-specific substances can be extracted from human erythrocytes with alcohol and demonstrated by flocculation with group-specific immune sera. 5. A conception of the structure of cellular antigens based upon the known facts, is presented.
Landsteiner
K
K
Laboratories of The Rockefeller Institute for Medical Research.
van der Scheer
J
J