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MTBP downregulation increased the migratory potential of MDM2 ( - / - ) p53 ( - / - ) mouse embryonic fibroblasts , suggesting that MTBP inhibited cell migration independently of the Mdm2 - p53 pathway .
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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:
 None