25938
As expected , PGE2 also stimulated OB differentiation , but when given in combination with PTH , the stimulatory effects of both were abrogated .
 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