kappa-opioid receptor is one of five related receptors that bind opium-like compounds in the brain and are responsible for mediating the effects of these compounds. These effects include altering the perception of pain, consciousness, motor control, and mood. Opioid receptors mediate the analgesic action and addictive properties of opioid drugs. The kappa-opioid receptor may provide a natural addiction control mechanism, and consequently selective agonists of this receptor may have therapeutic potential in the treatment of addiction.

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Dry ice