8659
Despite the similarity in labeling patterns of normal tissues , and the significant contribution of FoxD1 - cre labeled cells to normal bone , only Glast - creERT labeled progenitors contributed significantly to HO at all stages , suggesting that the cell populations that normally contribute to physiological bone formation , such as the Foxd1 - cre labeled cells , may not participate in pathological HO .
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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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