2703
Given the presence of putative Tcf / Lef response elements that bind beta - catenin / TCF transcription complex in the BMP2 promoter , we hypothesized that the Wnt / beta - catenin pathway stimulates BMP2 expression in osteogenic cells .
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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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