Cancer research

Two men in lab coats and two men in suits observing liquid in balloon flask in Brooklyn College laboratory. Caption: "Cancer Research: B. C. biology research laboratory is prime borough outpost in battle against cancer. Prof. Irving Tittler measures out solution for cortisone assay determination under watchful eyes of, left to right, Profs. Leonard G. Worley, Earl A. Martin and George S. Tulloch...."