2887
This effect required surface expression of the CD45 PTPase and was not observed in CD45-deficient variants of Jurkat cells .
 CD45-deficient variants, CD45 PTPase, Jurkat cells
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:
 CD45-deficient variants, CD45 PTPase, Jurkat cells