2509
Leukemic blasts in the majority of cases shared unique morphologic features ( deeply invaginated nuclear membranes , scant cytoplasm with fine azurophilic granularity , and finely granular Sudan black B and myeloperoxidase cytochemical reactivity ) that were remarkably similar to those of acute promyelocytic leukemia ( APL ); particularly the microgranular variant ( FAB AML -M3v ).
 ( protein: myeloperoxidase, None) , ( protein: FAB AML -M3v, None) , ( protein: microgranular variant, 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: myeloperoxidase, None) , ( protein: FAB AML -M3v, None) , ( protein: microgranular variant, None) 