Human CD4 PerCP‑conjugated Antibody

Detection of CD4 in Human Blood Lymphocytes by Flow Cytometry.

Human peripheral blood lymphocytes were stained with (A) Mouse Anti-Human CD4 PerCP-conjugated Monoclonal Antibody (Catalog # FAB3791C) or (B) Mouse IgG_2APerCP Isotype Control (Catalog # IC003C) and Mouse Anti-Human CD3e APC-conjugated Monoclonal Antibody (Catalog # FAB100A). View our protocol for Staining Membrane-associated Proteins.

Detection of Human CD4 by Flow Cytometry

Multiple receptors and ligands are involved in NK cell-mediated lysis of activated CD4+ T cells.Role of (A) activating and (B) inhibitory NK receptors in NK cell degranulation. Left column: representative histograms (of n≥3) for surface expression of ligands on activated (thick black line) and resting CD4+ T cells (thin black line). Isotype-matched control Ig are represented by dashed line (activated CD4+ T) and filled histogram (resting CD4+ T). Middle- and right column: NK and CD4+ T cells were activated for 4 days in vitro as described, and co-cultured for 4 hours with 10 ug/mL mAb (or relevant isotype-matched control Ig). Degranulation is shown for CD56dim (middle column) and CD56bright (right column) NK cells. Representative histograms of surface expression of receptors on activated (thick black line) and resting NK cells (thin black line). Isotype-matched control Ig are represented by dashed line (activated NK) and filled histogram (resting NK). * P<0.05, ** P<0.005, *** P<0.001. (C) Sorted IL-2-activated CD56dim and CD56bright NK cells were co-cultured with 51Cr-labeled activated CD4+ T cells in a 51Cr-release assay with human IgG4 isotype control (•) or anti-NKG2A mAb (○). Data represents n = 3 experiments. Image collected and cropped by CiteAb from the following publication (https://pubmed.ncbi.nlm.nih.gov/22384114), licensed under a CC-BY license. Not internally tested by R&D Systems.