4969
We investigated whether H ( 2 ) S directly regulates endothelial NO synthase ( eNOS ) activity and NO production in endothelial cells .
 Chemical: H ( 2 ) S; Chemical: NO; 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: H ( 2 ) S; Chemical: NO; Chemical: NO