4798
While p45 expression was shown to be restricted to erythroid cells , megakaryocytes and mast cells in hematopoietic lineage , we found in this study that p45 mRNA is abundantly transcribed in the granulocyte fraction of human peripheral blood cells .
 ( protein: p45, None) , ( cell type: granulocyte fraction, None) , ( cell type: mast cells, None) , ( cell type: erythroid cells, None) , ( cell type: megakaryocytes, None) , ( protein: p45, None) , ( RNA: p45 mRNA, None) , ( cell type: human peripheral blood cells, 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: p45, None) , ( cell type: granulocyte fraction, None) , ( cell type: mast cells, None) , ( cell type: erythroid cells, None) , ( cell type: megakaryocytes, None) , ( protein: p45, None) , ( RNA: p45 mRNA, None) , ( cell type: human peripheral blood cells, None) 