4841
An electrophoretic mobility shift assay ( EMSA ) with nuclear extract from activated T cells and an oligonucleotide of this binding site demonstrated a new protein-DNA complex , referred to as CMAT for c-myb in activated T cells ; this complex was not present in unactivated T cells .
 ( protein: CMAT, None) , ( cell type: unactivated T cells, None) , ( cell type: activated T cells, None) , ( protein: protein-DNA complex, None) , ( protein: c-myb in activated T cells, None) , ( cell type: activated 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: CMAT, None) , ( cell type: unactivated T cells, None) , ( cell type: activated T cells, None) , ( protein: protein-DNA complex, None) , ( protein: c-myb in activated T cells, None) , ( cell type: activated T cells, None) 