13868
Crkl , an SH2/SH3 adapter protein , becomes coimmunoprecipitated specifically with STAT5 from erythropoietin -stimulated erythroid cells ; although it was shown to become associated with c-Cbl in the studies using cell lines .
 STAT5, cell lines, SH2/SH3 adapter protein, c-Cbl, erythropoietin -stimulated erythroid cells, erythropoietin, Crkl
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:
 STAT5, cell lines, SH2/SH3 adapter protein, c-Cbl, erythropoietin -stimulated erythroid cells, erythropoietin, Crkl