Store › SPY620-DNA 100 stainings SPY620-DNA 100 stainings $790.00 Quantity: Add To Cart Added! SPY620-DNA is a red, fluorogenic, cell permeable and highly specific live cell DNA probe for fluorescence imaging of the nucleus and DNA SPY620-DNA is a red, fluorogenic, cell permeable and highly specific live cell DNA probe for fluorescence imaging of the nucleus and DNA