Suppression of Radiation-Induced Tumorization in Fern Prothalli

Science  25 Mar 1960:
Vol. 131, Issue 3404, pp. 926-927
DOI: 10.1126/science.131.3404.926


By quantitative techniques it has been shown that the expected tumor frequency after x-irradiation of spores of the fern Pteridium aquilinum can be reduced by the addition of casein hydrolyzate or amino acids to the medium upon which the spores are germinated and grown into either prothalli or tumors.