10883
The therapy also enhanced angiogenesis as reflected by increased immunostaining of CD31 , vWF , and alpha - SMA over controls in the cartilaginous callus at day 14 - 21 .
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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