13891
Both water and ethanolic extracts of I . suffruticosa significantly decreased LPS - induced nitric oxide ( NO ) as well as the expression of inducible nitric oxide synthase ( iNOS ) , tumor necrosis factor - alpha , and pro - interleukin - 1 beta .
 nitric oxide, NO, nitric oxide
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 nitric oxide, NO, nitric oxide