5238
Anti - transforming growth factor ( TGF ) - beta antibodies inhibit breast cancer cell tumorigenicity and increase mouse spleen natural killer cell activity .
 breast cancer cell, spleen natural killer cell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 breast cancer cell, spleen natural killer cell