6116
The proteins may prove useful in protecting adenovirus gene therapy vectors and transplanted cells from the immune system .
 ( cell line: transplanted cells, None) , ( DNA: adenovirus gene therapy vectors, 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: transplanted cells, None) , ( DNA: adenovirus gene therapy vectors, None) 