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By knocking down 78 potential splicing factors in five cell lines , we provide an extensive view of the complex regulatory landscape associated with the epithelial and mesenchymal states , thus revealing that RBFOX2 is an important driver of mesenchymal tissue - specific splicing .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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