11485
To examine the factors controlling vascular-specific expression of PECAM-1 , we cloned the 5'-flanking region of the PECAM-1 gene and analyzed its transcriptional activity .
 ( DNA: PECAM-1 gene, None) , ( protein: PECAM-1, None) , ( protein: PECAM-1, None) , ( DNA: 5#$%#-flanking region, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: PECAM-1 gene, None) , ( protein: PECAM-1, None) , ( protein: PECAM-1, None) , ( DNA: 5#$%#-flanking region, None) 