4791
In vitro, chronically HIV -infected cells of the lymphoid CEM line displayed resistance to glucocorticoid-induced apoptosis .
 chronically HIV -infected cells, lymphoid CEM line
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:
 chronically HIV -infected cells, lymphoid CEM line