13691
The mean metabolic ratio ( i . e . NA / IHN AUC ratio ) significantly increased with increasing IHN dose ( p < 0 . 05 ) .
 Chemical: IHN; Chemical: IHN
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: IHN; Chemical: IHN