| Keywords: |
dose response; drug efficacy; nonhuman; animal cell; animal; pain; opiate; animal experiment; central nervous system; drug receptor binding; drug antagonism; drug distribution; drug response; rat; drug dependence; radioisotope; morphine; biochemistry; adverse drug reaction; mu opiate receptor; receptors, opioid, mu; pharmacokinetics; pharmacology; naloxone; naltrexone; nervous system; ethylketazocine; naloxonazine; leucine enkephalin; respiratory system; drug comparison; receptors, opioid; naloxazone; human; priority journal; dihydromorphine; beta endorphin; metenkephalin; enkephalins; preliminary communication; metenkephalinamide; dihydromorphine h 3; enkephalin[2 dextro alanine 5 dextro leucine] h 3; enkephalin[2 dextro alanine 5 dextro leucine] i 125; naloxone h 3
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