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Background
Morphine is an effective analgesic for the treatment of severe pain, but it can cause itching in patients. In the present study, we examined the possible involvement of interleukin‐31 (IL‐31) receptor A (IL‐31RA) on the morphine‐induced itching and antinociception in mice.
Methods
Long‐lasting scratching (LLS) and short‐lasting scratching (SLS) were estimated as an indicator of itching...
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