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Next , we investigated in vitro the effects of zinc on ethanol action at recombinant wild - type ( WT ) and mutant alpha 1 GlyRs containing the D80A substitution , which eliminates zinc potentiation .
 Chemical: zinc; Chemical: ethanol; Chemical: zinc
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: zinc; Chemical: ethanol; Chemical: zinc