11907
Further studies of the role of these steroids and SERMs in regulating responses mediated by ER alpha and ER beta a variety of tissues , during different stages of development , are likely to uncover additional estrogenic activities .
 Chemical: steroids
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: steroids