d-Pen2-[d-Pen5]Enkephalin impairs acquisition and enhances retention of a one-way active avoidance response in rats

The relation of strength of stimulus to rapidity of habit‐formation

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Design and Analysis: A Researcher's Handbook

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Time-Dependent Processes in Memory Storage

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Bis-penicillamine enkephalins possess highly improved specificity toward delta opioid receptors.

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The Opiate Receptor

Solomon H. Snyder, Candace B. Pert, Gavril W. Pasternak · Annals of Internal Medicine · 1974 · 219 citations

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