5396
A 2-kb VDR cDNA insert (including the complete VDR coding region ) was cloned in an antisense orientation into the EBV episomal vector pMEP4 under the control of an inducible promoter and transfected into U937 .
 ( DNA: 2-kb VDR cDNA insert, None) , ( protein: VDR, None) , ( protein: VDR, None) , ( cell line: U937, None) , ( DNA: VDR coding region, None) , ( DNA: inducible promoter, 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: 2-kb VDR cDNA insert, None) , ( protein: VDR, None) , ( protein: VDR, None) , ( cell line: U937, None) , ( DNA: VDR coding region, None) , ( DNA: inducible promoter, None) 