7655
4 - tert - Octylphenol stimulates the expression of cathepsins in human breast cancer cells and xenografted breast tumors of a mouse model via an estrogen receptor - mediated signaling pathway .
 Chemical: 4 - tert - Octylphenol; 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: 4 - tert - Octylphenol; Chemical: estrogen