23945
GSCs are recruited toward endothelial cells via the SDF - 1 / CXCR4 axis and are induced to become pericytes predominantly by transforming growth factor beta .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None