| 41. | It is a high-antagonist of the ?-opioid receptor.
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| 42. | The four main opioid receptor types ( primitive jawless fishes.
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| 43. | Other drugs that are sometimes helpful include sedatives, opioid painkillers and anticonvulsants.
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| 44. | Another candidate for the psychoactive drug is an opioid derived from the poppy.
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| 45. | Opioid antagonist such as naloxone can also be administered concurrent with oxygen supplementation.
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| 46. | The term " opioid " originated in the 1950s.
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| 47. | Recent investigations discovered opioid receptors on peripheral sensory neurons.
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| 48. | Inflammatory pain is also blunted by endogenous opioid peptides activating peripheral opioid receptors.
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| 49. | Inflammatory pain is also blunted by endogenous opioid peptides activating peripheral opioid receptors.
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| 50. | This side effect can be severe enough to warrant discontinuation of opioid treatment.
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