6552
In the present study, we have identified a cellular context (the interleukin-2 [IL-2]-dependent HT-2 line ) in which the EPO stimulation of the EPOR fails to support cellular proliferation, STAT-5 induction , or MAPK activation , despite efficient phosphorylation of the EPOR and JAK2 and inhibition of apoptosis after withdrawal of IL-2 .
 EPOR, IL-2, MAPK, EPO, STAT-5, interleukin-2 [IL-2]-dependent HT-2 line, EPOR, JAK2
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:
 EPOR, IL-2, MAPK, EPO, STAT-5, interleukin-2 [IL-2]-dependent HT-2 line, EPOR, JAK2