26884
AIM OF THE STUDY : In this study , ( 1 ) H NMR - based metabonomics approach has been used to investigate the toxicity of realgar ( As2S2 ) after being counterbalanced by other TCMs in NJT .
 ( 1 ) H, realgar, As2S2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ( 1 ) H, realgar, As2S2