F0101B) and Mouse Anti-Human CD3e PE-conjugated Monoclonal Antibody (Catalog #
FAB100P). Quadrant markers were set based on control antibody staining (Catalog #
MAB002). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog #
FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog #
FC005). View our protocol for
Staining Intracellular Molecules." class="big_lightbox">

F0101B) and Mouse Anti-Human CD3e PE-conjugated Monoclonal Antibody (Catalog #
FAB100P). Quadrant markers were set based on control antibody staining (Catalog #
MAB002). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog #
FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog #
FC005). View our protocol for
Staining Intracellular Molecules." alt="Human peripheral blood mononuclear cells (PBMCs) either (A) untreated or (B) treated with 5 ug/mL PHA for 2 days were stained with Mouse Anti-Human CTLA-4 Monoclonal Antibody (Catalog # MAB3251) followed by Allophycocyanin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog #
F0101B) and Mouse Anti-Human CD3e PE-conjugated Monoclonal Antibody (Catalog #
FAB100P). Quadrant markers were set based on control antibody staining (Catalog #
MAB002). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog #
FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog #
FC005). View our protocol for
Staining Intracellular Molecules." class="big_thumb" />