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Although a great urinary excretion and half - normal plasma levels of Ao were observed on day 6 after PAN injection , when NS was clearly established , hepatic Ao mRNA levels did not change .
 Chemical: PAN; Disease: NS
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: PAN; Disease: NS