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  • receptor
  • This was blocked by locally applied μ-receptor-selective ( d -Phe-Cys-Tyr- d -Trp-Orn-Thr-Pen-Thr-NH 2 ) but not κ-receptor-selective (nor-binaltorphimine) antagonists. (jneurosci.org)
  • δ-Receptor antagonists (naltrindole and N , N -diallyl-Tyr-Aib-Aib-Phe-Leu) did not influence EM-1-induced but dose-dependently decreased EM-2-induced antinociception. (jneurosci.org)