Kininogen in Human Brain. Kininogen was detected in immersion fixed paraffin-embedded sections of human brain (substantia nigra) using Mouse Anti-Human Kininogen Monoclonal Antibody (Catalog # MAB1569) at 0.5 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC001). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to neuronal cell bodies and processes. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.