28251
In primary human hepatocytes , DHEA diminished the increase in CYP1A activities ( 7 - ethoxyresorufin O - dealkylation and phenacetin O - dealkylation ) and in CYP1A2 mRNA level induced by 3 - methylcholanthrene , but did not alter the amount of CYP1A1 and CYP1B1 mRNA .
 Chemical: DHEA; Chemical: 7 - ethoxyresorufin; Chemical: O; Chemical: phenacetin; Chemical: O; Chemical: 3 - methylcholanthrene
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: DHEA, 7 - ethoxyresorufin, O, phenacetin, O, 3 - methylcholanthrene 
Answer:
 Chemical: DHEA; Chemical: 7 - ethoxyresorufin; Chemical: O; Chemical: phenacetin; Chemical: O; Chemical: 3 - methylcholanthrene