7801
In addition , we tested the sensitivity of Wistar rats to 17 beta - estradiol by immature uterotrophic assay , and no obvious uterotrophic response was observed in the rats given doses up to 100 mu g / kg body weight .
 Chemical: 17 beta - estradiol
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: 17 beta - estradiol