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In stomach cancer cell lines , the protein expression level of multidrug resistance - associated protein 1 ( MRP1 ) was inversely correlated with etoposide sensitivity .
 Chemical: etoposide
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: etoposide