11409
Lung inflammation , IL - 4 production , and airway mast cell activity were also prevented under this early short - term treatment with PGE2 .
 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