5741
They also indicate that abundant TCL1 expression in quiescent mantle zone B cells is down-regulated in activated germinal center follicular B cells in parallel to the known expression pattern of BCL-2 .
 BCL-2, mantle zone B cells, quiescent mantle zone B cells, germinal center follicular B cells, TCL1
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:
 BCL-2, mantle zone B cells, quiescent mantle zone B cells, germinal center follicular B cells, TCL1