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Northern blot analysis indicated the expression of human PEBP2 alpha A , alpha B ( AML1 ), and beta genes in Jurkat cells .
 ( DNA: beta genes, None) , ( cell line: Jurkat cells, None) , ( DNA: AML1, None) , ( protein: PEBP2 alpha A, None) , ( protein: PEBP2, None) , ( protein: alpha B, 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: beta genes, None) , ( cell line: Jurkat cells, None) , ( DNA: AML1, None) , ( protein: PEBP2 alpha A, None) , ( protein: PEBP2, None) , ( protein: alpha B, None) 