About Florence B. Seibert
Florence Barbara Seibert was an American biochemist. She is best known for identifying the active agent in the antigen tuberculin as a protein, and subsequently for isolating a pure form of tuberculin, purified protein derivative (PPD), enabling the development and use of a reliable TB test. Seibert has been inducted into the Florida Women's Hall of Fame and the National Women's Hall of Fame. Seibert invented a new spray-catching trap to prevent contamination during the distillation process. In 1938, she was awarded the Trudeau Medal of the National Tuberculosis Association.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.