Abstract
1. Electrophoretically homogeneous pentosenucleic acids of pig liver and of pig kidney (cortex) -were prepared.
2. Those pentosenucleic acids did not give the positive precipitin reaction with the anti-pig gastric mucosa-rabbit serum, and on the other hand, the pig stomach (mucosa) pentosenucleic acid did not react with the anti-pig liver and anti-pig kidney-rabbit serum.
3. The pentosenucleic acid of the liver and kidney reacted with the anti-kidney and anti-liver serum, as such as well as after absorption with pig serum, each to each and moreover after absorption with liver and kidney in vitro antigen respectively, the antisera still contained a precipitin of the nucleic acid of the tissue with which immunization had been effected.
4. From these findings combined with those in the foregoing report, it might be pronounced that the pentosenucleic acids of kidney (cortex) and of liver possess a partially common and partially organ-specific antigenic structure contrary to the strictly organ-specific pentosenucleic acid of stomach (mucosa). The presumption is that the preparations of the kidney and liver nucleic acid were really uniform substances.
