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To understand the development of AVM resistance in invertebrates , we investigated the mechanisms by which AVM affected P - gp expression in Drosophila S2 cells .
 Chemical: AVM; Chemical: AVM
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: AVM; Chemical: AVM