Preliminary Report on the Protection from Ehrlich Ascites Tumor with Tumor Cells Photoinactivated in the Presence of Psoralen or 8-Methyl-Psoralen

Abstract

Cells of the Ehrlich ascites tumor irradiated with long wavelength ultraviolet (365 nm) in the presence of psoralen or 8-methyl-psoralen induce protection from the tumor in two strains of mice.