11138
Comamonas testosteroni is able to catabolize a variety of steroids and polycyclic aromatic hydrocarbons and might be used in the bioremediation of contaminated environments .
 steroids, polycyclic aromatic hydrocarbons
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 steroids, polycyclic aromatic hydrocarbons