OPIOIDS Crossword

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Across
  1. 2. Number of rings constituting morphine structure
  2. 4. The active analgesic morphine isomer
  3. 5. 3-Methoxy derivative of morphine used as antitussive
  4. 6. The endogenous opioids produced by the human body
  5. 9. mixed agonist/anagonist opioid analgesic
  6. 10. Name of a group introduced in position 14 of morphine leading to enhanced activity
Down
  1. 1. The major cause of death due to morphine overdose
  2. 3. The strategy of removal of some rings in a structure and testing the activity
  3. 7. one type of interaction essential for morphine binding to its receptor
  4. 8. Opioid agonist used in treatment of heroin addiction