9674
A single-chain Fv ( sFv ) was expressed from the variable regions of the CD40-specific mAb G28-5 .
 ( protein: sFv, None) , ( protein: mAb G28-5, None) , ( protein: single-chain Fv, None) , ( protein: variable regions, 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: sFv, None) , ( protein: mAb G28-5, None) , ( protein: single-chain Fv, None) , ( protein: variable regions, None) 