1600
Plasma nitrate / nitrite ( NOx ) was decreased in dex - treated rats compared to saline - treated rats ( 11 . 2 + / - 1 . 08 microm , 15 . 3 + / - 1 . 17 microm , respectively , P < 0 . 05 ) .
 Chemical: nitrate; Chemical: nitrite; Chemical: dex
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: nitrate; Chemical: nitrite; Chemical: dex