Human PBMCs competitively co-stained with anti-CD4 recombinant VHH and anti-CD4 RPA-T4 in Flow Cytometry
1x10^6 human PBMCs were surface co-stained in 100 µL with 0.25 µg anti-CD4 recombinant VHH, CoraLite® Plus 555 (MG-1229CL555, Clone: CTK0242) mixed with 5 µL Anti-Human CD4, CoraLite® Plus 647 (CL647-65143, Clone: RPA-T4) (middle). As controls 0.25 µg VHH were co-stained with 0.25 µg Mouse IgG1, κ Isotype Control, CoraLite® Plus 647 (CL647-65124, Clone: MOPC-21) (left), and 5 µL RPA-T4 were co-stained with 0.25 µg recombinant VHH Isotype Control, CoraLite® Plus 555 (Clone: CTK0201, right). Fc-receptors were blocked. Viability Dye (PD00002) was used. Cells were not fixed. Viable lymphocytes were gated.
Anti-Human CD4 recombinant VHH clone CTK0242 effectively co-stains the same CD4+ population as the conventional Anti-Human CD4 Mouse IgG1 clone RPA-T4.