2721
Conditioned medium from progestin - treated breast cancer cells stimulates endothelial cell proliferation in the absence though not in the presence of antibody to TSP - 1 , indicating that TSP - 1 secreted by breast cancer cells could be pro - angiogenic .
 Anatomy: breast cancer cells; Anatomy: endothelial cell; Anatomy: breast cancer cells
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: breast cancer cells; Anatomy: endothelial cell; Anatomy: breast cancer cells