3962
As measured by LC - ESI / MS / MS , GGT extracts ( 0 - 300 mu g / mL ) showed no inhibitory activity toward eight CYP isoforms ( 1A2 , 2A6 , 2B6 , 2C9 , 2C19 , 2D6 , 2E1 , and 3A4 ) in pooled human liver microsomes , suggesting that GGT may have low potential for herb - drug interactions mediated by CYP inhibition .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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