20130
Our findings suggest that the differential effects of 6 - NC and 1 , 2 - DHD - 6 - NC on AhR and ER alpha could potentially account for the higher carcinogenicity of 6 - NC in the rat mammary gland .
 6 - NC, 1 , 2 - DHD - 6 - NC, 6 - NC
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 6 - NC, 1 , 2 - DHD - 6 - NC, 6 - NC