24445
rBMSCs were induced to differentiate into endothelial - like cells and the effects of tPNS on the angiogenesis ability of rBMSCs and rBMSCs after endothelial differentiation were assayed by a Matrigel model in vivo and in vitro .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None