Abstract
A new technique is described for the serological detection of desoxyribonucleic acid (DNA). Specific agglutination of formalinized erythrocytes coupled with DNA from normal or tumor tissue by anti-DNAP serum offered the tool with which this detection is possible. Agglutination and specific inhibition studies with DNA coupled erythrocytes revealed that DNA probably functions as a hapten, i.e. the DNA confers serological specificity, but it must be coupled with a protein to elicit antibody formation or to be detected by precipitation or coupled to cells for agglutination reactions.