19907
Insulin - Like Growth Factor Binding Protein 2 ( IGFBP - 2 ) Promotes Growth and Survival of Breast Epithelial Cells : Novel Regulation of the Estrogen Receptor .
 Chemical: Estrogen
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: Estrogen