Store › SPY555-DNA 100 stainings SPY555-DNA 100 stainings $790.00 Quantity: Add To Cart Added! SPY555-DNA is a bright orange, fluorogenic, cell permeable and highly specific live cell DNA probe for fluorescence imaging of the nucleus and DNA SPY555-DNA is a bright orange, fluorogenic, cell permeable and highly specific live cell DNA probe for fluorescence imaging of the nucleus and DNA