Clinical Laboratory Hematology 3rd Edition by Shirlyn McKenzie, Lynne Williams

Exercise 8

You are doing several cytochemical stains on a bone marrow from a patient who was recently diagnosed with acute leukemia. You are looking at the MPO, and the blasts are negative. However, the reagent is nearing its expiration date, and you are not sure whether the stain worked properly. What cells found in the bone marrow normally express myeloperoxidase and could be used to assess the stain's integrity? (Objectives 8, 9)
A) neutrophils
B) red cell precursors
C) megakaryocytes
D) lymphocytes