Effect of Photodynamic Action on the Viscosity of Desoxyribonucleic Acid.

Abstract

Suspensions of desoxyribonucleic acid become less viscous when they are irradiated in the presence of photodynamically active compounds, such as eosin, methylene blue, 1,2-benzanthracene, or 20-methyl-cholanthrene. This apparent depolymerization may be involved in the lethal and possible mutagenic effects of photodynamic action.