2056
Inducible nitric oxide ( NO ) synthase ( iNOS ) protein expressions were markedly induced in bladders 24 h after acrolein treatment .
 Chemical: nitric oxide; Chemical: NO; Chemical: acrolein
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: nitric oxide; Chemical: NO; Chemical: acrolein