25936
The inhibitory effect mediated by COX - 2 / PGE2 was transferred by conditioned media from RANKL - treated BMMs and could be blocked by osteoprotegerin , which interferes with RANKL binding to its receptor on OC lineage cells .
 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