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,
Jack Abel 1980s, primarily for Marvel. Outside comic books, Abel inked John Celardo from 1967–1969 on the syndicated comic strip "Tales of the Green Beret", written by author Robin Moore. In 2016, Abel was nominated and tied for runner-up for the Inkwell Awards Special Recognition Award. Jack Abel Jack Abel (July 15, 1927 – March 6, 1996) was an American comic book artist best known as an inker for leading publishers DC Comics and Marvel Comics. He was DC's primary inker on the Superman titles in the late 1960s and early 1970s, and inked penciler Herb Trimpe's introduction of the popular superhero