13841
METHODS: Stable transfectants of the porcine vascular endothelial cell line PIEC with mutated CIITA constructs were tested for SLA-DR and SLA-DQ induction by recombinant porcine interferon-gamma .
 ( cell line: PIEC, None) , ( DNA: CIITA constructs, None) , ( protein: recombinant porcine interferon-gamma, None) , ( cell line: porcine vascular endothelial cell line, None) , ( protein: CIITA, None) , ( protein: SLA-DQ, None) , ( protein: SLA-DR, 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:
 ( cell line: PIEC, None) , ( DNA: CIITA constructs, None) , ( protein: recombinant porcine interferon-gamma, None) , ( cell line: porcine vascular endothelial cell line, None) , ( protein: CIITA, None) , ( protein: SLA-DQ, None) , ( protein: SLA-DR, None) 