John Jacob Abel isolated amino acids from blood by vividiffusion in 1913.

In 1911 John F. Anderson and Joseph Goldberger for the first time produced measles in an animal by injecting monkeys with cell-free blood filtrate from a human measles patient, suggesting that measles was a viral infection.

In 1910 John Auer demonstrated the bronchial spasm in acute anaphylaxis, and Samuel J. Meltzer suggested that this reaction characterized bronchial asthma.

Oswald T. Avery and Alphonse Dochez described the specific soluble substance of pneumococcus in 1917.

S. R. Benedict devised a basal metabolism test in 1918. Francis Gilman Blake and James Dowling Trask demonstrated the viral origin of measles in 1919.

In 1910 Washington University at Saint Louis president Robert Somers Brookings was inspired by the Flexner Report and began a program to elevate his university's medical school.

On 22 June 1914 A. G. Bryant and F. W. Duckering became the first...