after fractionation of liver and spleen tissue following the technique of schmidt -- thannhauser radioactivity was found in all liver and spleen constituent lipids -- rna -- dna and proteins , but after isolation and purification of dna following the original methods , we have not been able to demonstrate that tritium is really incorporated into dna molecules of a non-dividing organ such as the liver nor of an actively dividing organ such as the spleen .
C0771377
spleen
C0037993
spleen