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Human T leukemia virus type 1 ( HTLV-1 ) infects T cells and can lead to increase GM-CSF expression .
 ( cell type: T cells, None) , ( protein: GM-CSF, 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) , ( protein: GM-CSF, None) 