John Howard Mueller (June 13, 1891, Sheffield, Massachusetts – February 14, 1954) was an American biochemist, pathologist, and bacteriologist.
In 1917 he was a volunteer at the front in France with a medical unit and was involved in empirical proof of the transmission of trench fever by lice.
[3] (The academic position to which Mueller was appointed was formerly held by Joseph Gardner Hopkins MD (1882–1951), who was promoted.
When it is possible to catalogue the substances required by pathogenic bacteria for growth, it will probably be found that most of them are either required by, or important in, animal metabolism, and while many of them will surely be compounds at present familiar to the physiological chemist, it is equally probable that some will be new, or at least of hitherto unrecognized importance.
[5][6] In 1923 when Zinnser was appointed as the chair of the department of bacteriology and immunology at Harvard Medical School, Mueller followed him and became an assistant professor there.