13652
To assess the tissue-specific regulation of the CPO gene promoter , mouse genomic DNA clones for CPO were isolated.
 ( protein: CPO, None) , ( DNA: mouse genomic DNA clones, None) , ( DNA: CPO gene promoter, None) , ( protein: CPO, 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: CPO, None) , ( DNA: mouse genomic DNA clones, None) , ( DNA: CPO gene promoter, None) , ( protein: CPO, None) 