10899
BSAP failed to trans-activate CD19 promoter constructs in B cells or non-B cells , suggesting that cis elements such as the PyG and GC boxes are also necessary for high level CD19 promoter expression .
 ( protein: BSAP, None) , ( DNA: CD19 promoter, None) , ( protein: CD19, None) , ( DNA: CD19 promoter, None) , ( cell type: B cells, None) , ( DNA: CD19 promoter constructs, None) , ( protein: CD19, None) , ( cell type: non-B 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: BSAP, None) , ( DNA: CD19 promoter, None) , ( protein: CD19, None) , ( DNA: CD19 promoter, None) , ( cell type: B cells, None) , ( DNA: CD19 promoter constructs, None) , ( protein: CD19, None) , ( cell type: non-B cells, None) 