12223
ATP stimulates PGE ( 2 ) / cyclin D1 - dependent VSMCs proliferation via STAT3 activation : role of PKCs - dependent NADPH oxidase / ROS generation .
 ATP, PGE ( 2 ), NADPH
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ATP, PGE ( 2 ), NADPH