6147
GATA transcription factors associate with a novel class of nuclear bodies in erythroblasts and megakaryocytes .
 ( cell type: erythroblasts, None) , ( cell type: megakaryocytes, None) , ( protein: GATA transcription factors, 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:
 ( cell type: erythroblasts, None) , ( cell type: megakaryocytes, None) , ( protein: GATA transcription factors, None) 