2464
Senescent human T lymphocyte cultures are unable to undergo proliferation, but show no difference from early passage cells in cytotoxic function or surface antigenic profile .
 ( cell line: Senescent human T lymphocyte cultures, None) , ( cell line: early passage 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 line: Senescent human T lymphocyte cultures, None) , ( cell line: early passage cells, None) 