23407
In the livers of PCB126 - treated rats , the hallmark signs of AhR activation were present , including increased cytochrome P450 and lipid levels and decreased glutathione .
 PCB126, glutathione
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 PCB126, glutathione