3754
This demonstrates the participation of the renin - - angiotensin system in antagonizing the combined hypotensive effects of halothane and SNP .
 angiotensin, hypotensive, halothane, SNP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 angiotensin, hypotensive, halothane, SNP