The Streptavidin Blocker/Diluent can be used to prevent non-specific binding in biotin-conjugated detection systems for IHC and ISH. It can also be used as a diluent for biotinylated antibodies. This product is intended for qualitative immunohistochemistry and in situ hybridization with formalin-fixed paraffin-embedded tissue sections and frozen sections. The blocker/diluent may also be used with blood smears, cytosmears, and cell preparations. Long Term Storage: +4°C. Applications: IHC ISH (in situ hybridization).