7759
The polyphenols were also investigated for their rescuing ability and were found to provide greater hepatoprotection when toxins were pre - incubated for 30 min before adding the polyphenols .
 polyphenols, polyphenols
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 polyphenols, polyphenols