Description: AF425 labled Tyramide for Multiplex IHC staining or enhanced fluorescent IHC staining Form: Liquid in PBS Directions for Use : Add 10 μl of Tyramide reagent into 2 ml of PBS buffer containing 0.003% H2O2. 2 ml solution is good for 20 assays. Tyramide working solution should be used immediately and made fresh on the day of use.Application : For multiplex immunohistochemical (mIHC) applications, the traditional enzymatic amplification procedures are sufficient for achieving adequate antigen detection. However, several factors limit the sensitivity and utility of these procedures. Tyramide signal amplification (TSA) has proven to be a particularly versatile and powerful enzyme amplification technique with improved assay sensitivity. TSA is based on the ability of HRP, in the presence of low concentrations of hydrogen peroxide, to convert labeled tyramine-containing substrate into an oxidized, highly reactive free radical that can covalently bind to tyrosine residues at or near the HRP. To achieve maximal IHC detection, tyramine is prelabeled with a fluorophore. The signal amplification conferred by the turnover of multiple tyramide substrates per peroxidase label translates ultrasensitive detection of low-abundance targets and the use of smaller amounts of antibodies and hybridization probes. In immunohistochemical applications, sensitivity enhancements derived from TSA method allow primary antibody dilutions to be increased to reduce nonspecific background signals, and can overcome weak immunolabeling caused by suboptimal fixation procedures or low levels of target expression.Storage/Stability : Store at 4 °C in dark for 1 year, do not freeze. Platform : Ex/Em = 429/475 nm