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. Author manuscript; available in PMC: 2014 Sep 9.
Published in final edited form as: J Allergy Clin Immunol. 2013 Feb;131(2):622–3.e1-4. doi: 10.1016/j.jaci.2012.11.018

FIG E1.

FIG E1

Flow cytometry–based lymphocyte proliferation assay using a cell-tracking dye. Cells were incubated with CFSE, a fluorescent dye that binds covalently to cytosolic proteins, and then stimulated with mitogens. CFSE dilution could be detected on the control cells after cell division/proliferation but not on the patient’s cells.