8567
We demonstrate the utility of using primary lymphocyte models to study HTLV-I transcription in the context of cell signaling and suggest that activated PBMC maintain elevated levels of P-CREB , which promote basal HTLV-I transcription and enhance viral persistence in vivo.
 ( cell type: PBMC, None) , ( protein: P-CREB, 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: PBMC, None) , ( protein: P-CREB, None) 