abel, john jacob
American pharmacologist and physiological chemist who made important contributions to a modern understanding of the ductless, or endocrine, glands. He isolated adrenaline in the form of a chemical derivative (1897) and crystallized insulin (1926). He also invented a primitive artificial kidney.
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|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a chattering or flighty, light-headed person.|
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