Pharmacology:The study of drugs, their sources, theirnature, and their properties.Pharmacologyis the study of the body's reaction to drugs. It emerged as amajorareainAmerican medicine largely due to the efforts of John Jacob Abel (1857- 1938) who stressed the importance of chemistry in medicine, did research on theendocrineglands, first isolatedepinephrine(adrenaline), crystallizedinsulin(1926), and became the first pharmacology professor in the U.S.
