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 ).
 myeloperoxidase, FAB AML -M3v, microgranular variant
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 myeloperoxidase, FAB AML -M3v, microgranular variant