Abstract
An immuno-cyto-chemical study using anti-DNA antibodies revealed a profound antigenic difference between the DNA of neutro-phils and that of lymphocytes. The former is split by DNase I and n, the latter by DNase I. The basis of this difference has not been determined. Several possible explanations are considered, including that of a 3[image]-3[image], 5[image]-5[image] reciprocal linkage for the lymphocyte DNA rather than the conventional 3[image]-5[image] linkage of the neutrophil DNA. Leukemic leucocytes and the blastic cells of normal bone marrow did not react with anti-DNA antibodies of neutrophils and lymphocytes.