1444
Southern analysis using a human progesterone receptor ( hPR ) cDNA probe identified a germline TaqI restriction fragment length polymorphism ( RFLP ) defined by two alleles : T1 , represented by a 2.7 kb fragment ; and T2 , represented by a 1.9 kb fragment and characterised by an additional TaqI restriction site with respect to T1 .
 ( DNA: T1, None) , ( protein: hPR, None) , ( DNA: 1.9 kb fragment, None) , ( DNA: germline TaqI restriction fragment length polymorphism, None) , ( DNA: T1, None) , ( DNA: 2.7 kb fragment, None) , ( protein: human progesterone receptor, None) , ( DNA: human progesterone receptor ( hPR ) cDNA probe, None) , ( DNA: TaqI restriction site, None) , ( DNA: alleles, None) , ( DNA: RFLP, None) , ( protein: progesterone receptor, None) , ( DNA: T2, 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: T1, None) , ( protein: hPR, None) , ( DNA: 1.9 kb fragment, None) , ( DNA: germline TaqI restriction fragment length polymorphism, None) , ( DNA: T1, None) , ( DNA: 2.7 kb fragment, None) , ( protein: human progesterone receptor, None) , ( DNA: human progesterone receptor ( hPR ) cDNA probe, None) , ( DNA: TaqI restriction site, None) , ( DNA: alleles, None) , ( DNA: RFLP, None) , ( protein: progesterone receptor, None) , ( DNA: T2, None) 