Assertion: noradrenaline's effect | /r/CreatedBy | suprarenal extract
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text: It was John Newport Langley at the University of Cambridge UK, whose observations along with those of Paul Ehrlich were to lay the foundations for the concept of drug receptors, who first observed in the cat  that the effects produced by suprarenal extract (he did not use purified adrenaline) are almost all such as are produced by stimulation of sympathetic nerves.