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,
Jake Abel Jake Abel Jacob Allen Abel (born November 18, 1987) is an American actor and singer who is known for playing Adam Milligan in the CW series "Supernatural" (2009–10), Luke Castellan in the film adaptation of "" (2010), and its sequel, "" (2013), Mark James in the film adaptation of "I Am Number Four" (2011), Ian O'Shea in "The Host" (2013), and Mike Love in Love & Mercy. Abel was born in Canton, Ohio, the son of Kim and Mike Abel. He has a brother, Scott. His first credited role was in the Disney Channel Original Movie "Go Figure", playing Spencer.