2967
In this study , female and male largemouth bass ( Micropterus salmoides ) ( LMB ) were exposed to 3mg dieldrin / kg feed in a 2 month feeding exposure ( August - October ) to ( 1 ) determine if the hypothalamic transcript responses to dieldrin were conserved between the sexes ; ( 2 ) characterize cell signaling cascades underlying dieldrin neurotoxicity ; and ( 3 ) determine whether or not co - feeding with 17 beta - estradiol ( E ( 2 ) ) , a hormone with neuroprotective roles , mitigates responses in males to dieldrin .
 dieldrin, dieldrin, dieldrin, 17 beta - estradiol, dieldrin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 dieldrin, dieldrin, dieldrin, 17 beta - estradiol, dieldrin