On the Isolation of Antibodies from immunized Serum-globulin.

<P>1. It is possible to isolate the immune bodies from the globulin fraction, which was obtained by the salting out with ammonium sulphate or electrodialysis, by the biologic method. The rate of isolation is almost the same as the rate of the isolation by the biologic method. 2. The isolated serum from the globulin fractions by the combination of the physical or the chemical with the biologic method, has less antigenic and nitrogen contents than the isolated serum by the biologic method alone; especialy the isolated immune substance by the combination of the physical with the biologic method has the least antigenic contents. 3. The best results are obtained in the physiologic salt solution at 65℃, for the isolation of precipitin by means of the combination of the physical with the biologic method.It is a pleasure to express my indebtedness to Prof. Ogata for the encouragement and valuable suggestions which he has given. I am also indebted to Dr. Sunouti for various assistance he has offered in the preparation of this work.</P>