4604
Meanwhile , knockdown of HDGF , an up - regulated protein and a target of NF - kappaB , induced cell apoptosis in the metastatic HCC cells .
 cell, metastatic HCC cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 cell, metastatic HCC cells