 He started at City College of New York at the age of 15 and graduated in 1932 with a major in chemistry at age 18.In January 1933, Kabat was already working in Michael Heidelberger’s laboratory doing routine lab chores at Columbia University College of Physicians and Surgeons.Kabat started work on his Ph.D. in the Department of Biochemistry, taking most courses at night, and completed his Ph.D. under Heidelberger in only four years.