5269
In these same animals , E1A protein was detected 20 days after infection in two and 47 days after infection in one while persistent bronchiolitis was observed in four and three animals 20 and 47 days after infection , respectively.
 ( protein: E1A protein, 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: E1A protein, None) 