11613
Mutants of type 5 adenovirus ( Ad5 ) with reiterated DNA sequences in the E1a region appeared in a human T-lymphocyte cell line , Molt-4 , persistently infected with H5sub304 , a deletion/substitution mutant that has a wild-type phenotype in viral replication .
 ( DNA: reiterated DNA sequences, None) , ( DNA: E1a region, None) , ( cell line: human T-lymphocyte cell line, None) , ( cell line: Molt-4, 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:
 ( DNA: reiterated DNA sequences, None) , ( DNA: E1a region, None) , ( cell line: human T-lymphocyte cell line, None) , ( cell line: Molt-4, None) 