Oscar Ratnoff, Date of Birth, Place of Birth, Date of Death
TweetOscar Ratnoff
Date of Birth: 23-Aug-1916
Place of Birth: New York City, New York, United States
Date of Death: 20-May-2008
Profession: hematologist
Nationality: United States
Zodiac Sign: Virgo 
About Oscar Ratnoff
- Oscar Davis Ratnoff (August 23, 1916 – May 20, 2008) was an American physician who conducted research on the process of coagulation and blood-related disorders.
- Ratnoff discovered the substance later known as Factor XII and was one of the primary contributors to the delineation of the exact sequence that makes up the clotting cascade.
- He also made notable research contributions to the understanding of the complement system and to the detection and treatment of hemophilia. Ratnoff was a professor at the Case Western Reserve University School of Medicine, served as president of the American Society of Hematology, and was elected to the National Academy of Sciences.
- He remained active in research at Case Western Reserve until he was 85 and he died in Cleveland a few years later.
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