Abstract
A quantitative method for the study of deoxyribonuclease activity by means of a photocell-flow birefringence apparatus is described. The amount of elliptically polarized light transmitted by DNA or DNP solutions varried directly as the velocity gradient and the concentration of the DNA or DNP solutions. Salts decreased the flow birefringence. The decrease in flow birefringence due to the action of DNase is comparable to the data obtained by viscosimetry.
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