1749
The activity of constructs containing 5' deletion mutants of the alpha 4 gene promoter was compared in transfection assays into cell lines that express alpha 4 and cell lines that do not.
 ( protein: alpha 4, None) , ( cell line: cell lines, None) , ( cell line: cell lines, None) , ( DNA: alpha 4 gene promoter, None) , ( DNA: 5#$%# deletion mutants, None) , ( protein: alpha 4, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: alpha 4, None) , ( cell line: cell lines, None) , ( cell line: cell lines, None) , ( DNA: alpha 4 gene promoter, None) , ( DNA: 5#$%# deletion mutants, None) , ( protein: alpha 4, None) 