12215
In order to shed light on the early events of the EBV infection of T cells , we have used in situ reverse transcription based polymerase chain reaction ( RT-PCR ) to study the initial EBV transcriptional program in homogeneous CD4+ and CD8+ lymphocytes .
 ( cell type: T 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: T cells, None) 