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Using RT-PCR we were able to identify both the full length wild-type form and an isoform of the ER which precisely lacks exon V in both patient and normal individuals .
 ( DNA: exon V, None) , ( protein: ER, None) , ( protein: full length wild-type form, 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: exon V, None) , ( protein: ER, None) , ( protein: full length wild-type form, None) 