7243
In vivo expanded CD4+CD28null and CD8+CD28null T cells uniformly lack alpha- and beta- bound complexes , resembling the pattern seen in chronically activated cells and not of senescent cells .
 ( cell type: senescent cells, None) , ( cell type: chronically activated cells, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell type: senescent cells, None) , ( cell type: chronically activated cells, None) 