jan 1, 1975 - Endorphins are Discovered

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Scientists John Hughes and Hans Kosterlitz of the University of Aberdeen isolate what they call enkephalins from the brain of a pig.These will later be termed endorphins from an abbreviation of "endogenous morphine". They are polypeptides (the building blocks of proteins) produced by the pituitary gland and the hypothalamus in vertebrates.

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