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Home Q & A Board Science-Related Homework Help Psychology
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killian killian
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10 years ago
Endorphins are similar in chemical structure and lock into the same receptor sites as ______.   
      a.   barbiturates                     c.   hallucinogenics   
      b.   opioids                        d.   stimulants   
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Smiling Face with Open Mouth
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f_zah1f_zah1
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10 years ago
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