4702
We investigated the effects of Cd and 17 - alpha - ethinylestradiol ( EE 2 ) on AhR - associated gene expression after oral exposure of ovariectomized female Wistar rats , and metallothionein ( Mt1a ) expression as a typical metal - response marker .
 Chemical: Cd; Chemical: 17 - alpha - ethinylestradiol; Chemical: EE 2
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Cd; Chemical: 17 - alpha - ethinylestradiol; Chemical: EE 2