[Detection of left-helical segments in eukaryotic DNA].

The method of DNA binding to nitrocellulose filters was applied to DNA isolated from mouse liver and Ehrlich ascite carcinoma (EAC), calf thymus, and lymphocytes from patients with chronic lymphoid leukemia. In those and phage PM2 DNA the increase in the DNA binding to the filters with a rise in NaCl concentration from 0.5 up to 4.

[Local despiralization of DNA in lymphocytes of patients with chronic lympholeukemia].

DNA isolated from blood lymphocytes of 43 patients with chronic lymphoid leukemia was studied for the content of local despiralized sites by the kinetic formaldehyde method. The patients were classified into three groups: before, during and after chemotherapy by cytostatic drugs (cyclophosphamide or chlorambucil). It is found that DNA from leukosis lymphocytes contain more despiralized sites as against to DNA from normal lymphocytes and that after chemotherapy a degree of DNA despiralization decreases.