26067
N7 - GA - Gua adducts in DNA of hepatocytes were determined by HPLC - ESI - MS / MS after lysis of the cells and neutral thermal hydrolysis .
 N7 - GA - Gua
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 N7 - GA - Gua