Florence B. Seibert

A life worthexploring.

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.

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