Chisholm KM, Merker JD, Gotlib JR, Gitana G, Lefterova M, Zehnder JL, George TI, Arber DA, Ohgami RS. Mast cells in systemic mastocytosis have distinctly brighter CD45 expression by flow cytometry. Am J Clin Pathol. 2015 Apr; 143(4):527-34.