682
Monofactorial analysis identified the following factors to be correlated with increased risk: moderate/marked mononuclear cell reaction ( MCR ), high histologic grade (G), extensive intraductal component ( EIC ), tumor necrosis , macroscopic multiplicity , estrogen receptor negativity , anatomic tumor size , age younger than 40 years, and vascular invasion .
 protein: estrogen receptor
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: estrogen receptor