Flow cytometric analysis of IL-17A-producing mouse EL-4 cells. Cells from the mouse EL4 (T lymphoma, ATCC TIB-39) cell line were stimulated (5 hr) with Phorbol 12-Myristate 13-Acetate (PMA; 50 ng/ml final concentration; Sigma, Cat. No. P-8139) and Ionomycin (1000 ng/ml final concentration; Sigma, Cat. No. I-0634) in the presence of BD GolgiStop™ Protein Transport Inhibitor (containing Monensin) (Cat. No. 554724). The cells were washed with BD Pharmingen™ Stain Buffer (FBS) (Cat. No. 554656), preincubated with Purified Rat Anti-Mouse CD16/CD32 antibody (Mouse BD Fc Block™) (Cat. No. 553141/553142), and fixed and permeabilized with BD Cytofix/Cytoperm™ Fixation and Permeabilization Solution (Cat. No. 554722).
The cells were then washed and stained in BD Perm/Wash™ Buffer (Cat. No. 554723) with BD Horizon™ BV605 Rat IgG1 κ Isotype Control (Cat. No. 562993; Left Panel) or BD Horizon BV605 Rat Anti-Mouse IL-17A (Cat. No. 564169; Right Panel) using BD Biosciences' Protocol for Immunofluorescent Staining of Intracellular Cytokines for Flow Cytometric Analysis. Two-color contour plots showing correlated expression patterns of IL-17A antibody (or Ig Isotype control staining) versus cellular autofluorescence were derived from gated events with the forward and side light-scatter characteristics of intact cells. Flow cytometric analysis was performed using a BD™ LSR II Flow Cytometer System.