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Warfield T. Longcope was the twenty-second president of the American Association of Immunologists, serving from 1935 to 1936. He was a professor of medicine at the Johns Hopkins University School of Medicine as well as the physician-in-chief of the Johns Hopkins Hospital from 1922 to 1946.
Longcope received his M.D. from Johns Hopkins in 1901. Upon graduation, he moved to Philadelphia, where he was a resident pathologist (1901–1904) and the director (1904–1911) of the Ayer Clinical Laboratory at Pennsylvania Hospital as well as an assistant professor of applied medicine at the University of Pennsylvania School of Medicine (1909–1911). He spent the next 11 years in New York City, serving as an associate professor of medicine (1911–1914) and Bard Professor (1914–1921) at the Columbia College of Physicians and Surgeons (P&S) and as associate physician (1911–1914) and medical director (1914–1921) of the P&S-affiliated Presbyterian Hospital. From February to July 1922, Longcope was a professor of clinical medicine at Cornell University Medical College and a visiting physician in the Second Division of Bellevue Hospital before returning that summer to Baltimore and Johns Hopkins. Following 24 years as professor of medicine at the Johns Hopkins University School of Medicine and physician-in-chief of the Johns Hopkins Hospital, Longcope retired in 1946. He died of emphysema on his farm in Lee, Massachusetts, on April 25, 1953, at the age of 76.
Councillor: 1934–1935, 1936–1940