25939
These data suggest that PGE2 , acting via EP4R on BMMs committed to the OC lineage , stimulated secretion of a factor or factors that acted to suppress PTH - stimulated OB differentiation .
 Chemical: PGE2
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: PGE2