20671
Moreover , the n - butanol fraction significantly ( p < 0 . 05 ) decreased PGE2 and TNF - alpha in the exudates of rat paw edema .
 Chemical: n - butanol; 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: n - butanol; Chemical: PGE2