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,
Mary Abel Mary Abel Mary Abel (1850–1938) is known for her work in home economics and nutrition which mainly revolved around the publication of pamphlets and her book, "Successful Family Life on the Moderate Income". Up until Mary Abel's marriage to John J. Abel in 1883, little is known of Abel's early life. Abel moved to Europe with her husband after his postgraduate year at Johns Hopkins University. In 1891, Mary and John returned to the United States where Mary began her work in home economics and nutrition. Abel initially moved to the midwest but relocated to Baltimore in 1893. She and