4621
Vimentin expression was found preferentially in tumors with high GF ( greater than 15 % Ki - 67 positive by immunoperoxidase staining ) and low ER levels ( less than 60 fmols / mg protein by a monoclonal enzyme immunoassay ) .
 tumors
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 tumors