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Increased expression of neuronal nitric oxide synthase in bladder afferent pathways following chronic bladder irritation .
 Chemical: nitric oxide; Disease: bladder irritation
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: nitric oxide; Disease: bladder irritation