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

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

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Enkephalin and a potent analog facilitate maze performance after intraperitoneal administration in rats

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The use of [³H]‐[<scp>d</scp>‐Pen²,<scp>d</scp>‐Pen⁵]enkephalin as a highly selective ligand for the δ‐binding site

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Frontiers of Stress Research

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Site-directed alkylation of multiple opioid receptors. II. Pharmacological selectivity.

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Stimulation and antagonism of opioid !d-receptors produce opposite effects on active avoidance conditioning in mice.

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WITHDRAWN: How to Increase and Decrease the Strength of Memory Traces: The Effects of Drugs and Hormones

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β-Endorphin and forgetting

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A series of novel, highly potent and selective agonists for the κ‐opioid receptor

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Enkephalin actions on avoidance conditioning may be related to adrenal medullary function

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Leu-enkephalin impairs memory of an appetitive maze response in mice.

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ICI 174,864, a selective delta opioid antagonist, reverses the learning impairment produced by [leu]enkephalin

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Central versus peripheral actions of Leu-enkephalin on acquisition of a one-way active avoidance response in rats

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Leu-enkephalin impairs memory of an appetitive maze response in mice.

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Quaternary naloxone enhances acquisition of a discriminated Y-maze escape and a one-way active avoidance task in mice

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Naloxone and [Met5]enkephalin effects on retention: attenuation by adrenal denervation

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Dynorphin A-( 1-13)-Tyr14Leu15-Phe16-Asn17-Gly18-Pro19: a potent and selective κ opioid peptide

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dPen2-[dPen5]enkephalin, a delta opioid receptor-selective analog of [Leu]enkephalin, impairs avoidance learning in an automated shelf-jump task in rats

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Recent Developments in Bioassay Using Selective Ligands and Selective In Vitro Preparations

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Design of conformationally constrained cyclic peptides with high delta and mu opioid receptor specificities.

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Design of conformationally constrained cyclic peptides with high delta and mu opioid receptor specificities.

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