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The appearance of the BamHI ZLF-1 gene product , ZEBRA , by RT-PCR , was observed within 8 hr of infection.
 ( protein: ZEBRA, None) , ( protein: BamHI ZLF-1 gene product, 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: ZEBRA, None) , ( protein: BamHI ZLF-1 gene product, None) 