13844
RESULTS: In preliminary studies, we demonstrated that transfection of the PIEC line with full-length human CIITA constructs resulted in strong expression of SLA-DR and SLA-DQ antigens, thus establishing the cross-species effectiveness of human CIITA in the pig .
 ( protein: SLA-DR, None) , ( protein: CIITA, None) , ( protein: CIITA, None) , ( protein: human CIITA, None) , ( cell line: PIEC line, None) , ( DNA: CIITA constructs, None) , ( protein: SLA-DQ, 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: SLA-DR, None) , ( protein: CIITA, None) , ( protein: CIITA, None) , ( protein: human CIITA, None) , ( cell line: PIEC line, None) , ( DNA: CIITA constructs, None) , ( protein: SLA-DQ, None) 