3304
All human adenoviruses transform rodent cells in vitro, but only cells transformed by serotypes belonging to subgroups A ( Ad12 ) and B ( Ad3 ) are tumorigenic for immunocompetent animals .
 ( cell type: rodent cells, 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 type: rodent cells, None) 