Johnson ᅠ& ᅠJohnson pioneered the first prescription contraceptive gel
In 1931, Johnson ᅠ& ᅠJohnson pioneered family planning products with ORTHO-GYNOL, the first prescription contraceptive gel.
In 1931, Johnson ᅠ& ᅠJohnson pioneered family planning products with ORTHO-GYNOL, the first prescription contraceptive gel.
In 1931, the electron microscope was invented by Max Knoll and Ernst Ruska at the Berlin Technische Hochschule….
In 1931, Drs. Ralph Falk and Don Baxter launched the Don Baxter Intravenous Products Corporation, the first commercial…
In 1931, H. Trendley Dean and Elias Elvove started work on the mystery of “mottled enamel” — later…
In 1931, Rolla E. Dyer, Lucius F. Badger, and Adolph S. Rumreich demonstrated that Rocky Mountain spotted fever…
In 1931, The Journal of Cancer Research (published quarterly from 1916-1930 became the American Journal of Cancer (published…
In 1931, Rockefeller Institute investigator Richard Shope published the first of three landmark papers that established the etiology…
In 1931, The Cook County School of Nursing opened in the former Illinois Training School for Nurses, now…
In 1931, Johnsonᅠ&ᅠJohnson established operations in Australia.
In 1931, the outpatient clinic building opened on Marquam Hill allowing medical and nursing students and residents gain…
In 1931, Galveston’s Public Health Service Hospital in Galveston, Texas, was completed as part of a major Public…