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,
S. John Jacob as an INC candidate in 2011 but switched his allegiance to the Tamil Maanila Congress (TMC) when G. K. Vasan revived it in 2014. Assigned to the Killiyur constituency once again, his was one of 26 names put forward by the TMC to contest the 2016 state assembly elections as part of an alliance with the People's Welfare Front and Desiya Murpokku Dravida Kazhagam. However, one week later it was announced that D. Kumaradas would contest the seat for the TMC instead. The constituency was won by the INC candidate, S. Rajesh Kumar. S. John Jacob S. John Jacob (born