1280
We go on to perform the first global DNA promoter methylation and gene expression analyses comparing human cancers to their reprogrammed counterparts and report that reprogramming / differentiation results in significant epigenetic remodeling of oncogenes and tumor suppressors , while not significantly altering the differentiation status of the reprogrammed cancer cells , in essence dedifferentiating them to a state slightly before the mesenchymal stem cell differentiation stage .
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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