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To examine the contribution of estrogens , fetuses were injected with TP ( 20 mg ) , the potent estrogen agonist , diethylstilbestrol ( DES ; 20 mg ) , or vehicle control at day 62 and day 82 and assessed at day 90 .
 Chemical: estrogens; Chemical: estrogen; Chemical: diethylstilbestrol; Chemical: DES
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: estrogens; Chemical: estrogen; Chemical: diethylstilbestrol; Chemical: DES