Spinal and Peripheral Mechanisms Individually Lead to the Development of Remifentanil-induced Hyperalgesia

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Dynorphin Promotes Abnormal Pain and Spinal Opioid Antinociceptive Tolerance

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Sustained Morphine Exposure Induces a Spinal Dynorphin-Dependent Enhancement of Excitatory Transmitter Release from Primary Afferent Fibers

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