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Mutation of a zinc - binding residue in the glycine receptor alpha 1 subunit changes ethanol sensitivity in vitro and alcohol consumption in vivo .
 Chemical: zinc; Chemical: glycine; Chemical: ethanol; Chemical: alcohol
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: glycine; Chemical: ethanol; Chemical: alcohol