4419
A methanol extract of rosemary and its hexane fraction reduced NO generation with an IC ( 50 ) of 2 . 75 and 2 . 83 mu g / ml , respectively .
 Chemical: methanol; Chemical: hexane; Chemical: NO
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: methanol; Chemical: hexane; Chemical: NO