8968
The release kinetics of dual delivery of osteogenic bone morphogenetic protein - 2 ( BMP - 2 ) and angiogenic basic fibroblast growth factor ( bFGF ) were investigated in vitro by radiolabeling the respective growth factors and monitoring their release in vitro .
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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