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Local PGE2 administration prevented the increase of airway IL - 13 and osteopontin and kept lung plasmacytoid dendritic cell counts close to baseline .
 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