13274
These studies indicate that iNO attenuates iNOS expression in macrophages and inhibits monocyte adhesion to endothelial cells , and suggest that endogenously derived iNO may be an important autoregulatory inhibitor of vascular inflammation
 endothelial cells, macrophages, iNOS
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 endothelial cells, macrophages, iNOS