1. Exp. 1 (T[ransforming]. P[rinciple].) Effect of Fluoride on Autolysis of Pneumococcus Type III and on Preservation of the Transforming Principle (image 1) Publication: Produced: 22 October 1940 Subject(s): Transformation, Genetic Archival Collection: The Oswald T. Avery Collection (Profiles in Science)