4468
In addition , Brk1 downregulation results in defective directional migration and invasive growth in renal cell carcinoma cells as well as in other tumor cell types .
 renal cell carcinoma cells, tumor cell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 renal cell carcinoma cells, tumor cell