PowerVision+TM IHC Detection System (Polymer based, biotin-free IHC detection kits) (Offered in anti-mouse & anti-rabbit multivalent) Kit components: Pre-blocking (Primary antibody diluent, Ready-to-use) Post-blocking (Polymer penetration enhancer, Ready-to-use) Poly-HRP anti-Mouse/Rabbit IgG (Ready-to-Use) DAB (2 Components)