16350
These data suggest that Hh - Gli activators alter the function of BMP to specify perichondrial cells into osteoblasts ; the timing of Hh input and its target populations are critical for BMP function .
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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