13472
In CAT reporter constructions no appreciable level of CAT activity was supported by the beta globin promoter , and only low level activity by the delta promoter .
 ( protein: CAT, None) , ( DNA: beta globin promoter, None) , ( DNA: delta promoter, None) , ( DNA: CAT reporter constructions, 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: CAT, None) , ( DNA: beta globin promoter, None) , ( DNA: delta promoter, None) , ( DNA: CAT reporter constructions, None) 