10885
Blocking angiogenesis with daily injection of endostatin from day 4 to day 10 into fracture sites blocked the COX2 - mediated reduction of callus size that was associated with an increase in hypertrophic chondrocytes and concomitant reduction in osteoclasts .
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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