3347
At nanomolar concentrations MP ( 0 . 01 , 0 . 1 and 1 nM ) significantly attenuated the 6 - OHDA - and hydrogen peroxide - induced cytotoxicity in SH - SY5Y cells .
 6 - OHDA, hydrogen peroxide
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 6 - OHDA, hydrogen peroxide