9139
IL-6 -induced apoptosis , but not macrophage-differentiation , was blocked by continuously expressed BCL2 .
 IL-6, BCL2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 IL-6, BCL2