6687
Human T-cell leukemia virus type 1 Tax protein induces the expression of STAT1 and STAT5 genes in T-cells .
 ( protein: Human T-cell leukemia virus type 1 Tax protein, None) , ( 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:
 ( protein: Human T-cell leukemia virus type 1 Tax protein, None) , ( cell type: T-cells, None) 