8973
An obvious stimulatory effect on bone regeneration was observed for the colloidal gels loaded with BMP - 2 , whereas bFGF - loaded colloidal gelatin gels did not influence the rate of bone regeneration .
 None
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