6850
Even so , BSO pre - treatment abolished NAC protective effects against alpha - MeDA neurotoxicity , which were , at least partially , due to GSH de novo synthesis .
 BSO, NAC, alpha - MeDA, GSH
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 BSO, NAC, alpha - MeDA, GSH