4258
Transfection of a cDNA containing the human CIITA coding sequence under the control of an heterologous promoter restores expression of human MHC class II genes in the hybrids and is responsible for de novo expression of mouse MHC class II genes in both the mouse plasmacytoma cell line and the hybrids .
 ( DNA: human MHC class II genes, None) , ( DNA: human CIITA coding sequence, None) , ( cell line: hybrids, None) , ( cell line: mouse plasmacytoma cell line, None) , ( DNA: mouse MHC class II genes, None) , ( protein: CIITA, None) , ( DNA: heterologous promoter, 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:
 ( DNA: human MHC class II genes, None) , ( DNA: human CIITA coding sequence, None) , ( cell line: hybrids, None) , ( cell line: mouse plasmacytoma cell line, None) , ( DNA: mouse MHC class II genes, None) , ( protein: CIITA, None) , ( DNA: heterologous promoter, None) 