John Jacob Abel to successfully isolate the neutral base of epinephrine by adding ammonium to highly concentrated extract, a method Abel himself tried but failed due to the use of low concentration of extract. After Takamine's success, Abel himself remarked, with great candor, "The efforts of years on my part in this once mysterious field of suprarenal, medullary biochemistry, marred by blunders as they were, eventuated, then, in the isolation of the hormone not in the form of the free base but in that of its monobenzoyl derivative." Together with L.G. Rowntree and B.B. Turner, Abel devised what they called a "vividiffusion" apparatus,
Walter Abel myocardial infarction in Essex, Connecticut. He was survived by two sons, John and Michael. Walter Abel Walter Abel (June 6, 1898 – March 26, 1987) was an American actor. Abel was born in St. Paul, Minnesota, the son of Christine (née Becker) and Richard Michael Abel. Abel graduated from the American Academy of Dramatic Arts where he had studied in 1917 and joined a touring company. His brother Alfred died in 1922 from tuberculosis contracted while serving overseas in World War I. Abel was married to concert harpist Marietta Bitter. Abel made his film debut in 1918 with a small