6746
We now demonstrate that a forced exogenous expression of the four different isoforms of WT1 in K562 does not affect the differentiation response , as judged by accumulation of hemoglobin in response to hemin or the expression of megakaryocytic cell surface markers in response to 12-O-tetradecanoylphorbol-13-acetate ( TPA ).
 ( protein: megakaryocytic cell surface markers, None) , ( DNA: WT1, None) , ( cell line: K562, None) , ( protein: hemoglobin, None) , ( protein: hemin, 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:
 ( protein: megakaryocytic cell surface markers, None) , ( DNA: WT1, None) , ( cell line: K562, None) , ( protein: hemoglobin, None) , ( protein: hemin, None) 