11481
When BALB/c mice were inoculated with E1 -deleted Ad vectors , only the immunodominant Kd-restricted epitope was recognized, and Dd-restricted CTLs did not develop.
 ( protein: immunodominant Kd-restricted epitope, None) , ( DNA: E1, None) , ( cell type: CTLs, 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: immunodominant Kd-restricted epitope, None) , ( DNA: E1, None) , ( cell type: CTLs, None) 