biovision K112-400 Cell and tissue lysates ? Detection method- Fluorescence (400 nm excitation filter and 505 nm emission filter) ? Species reactivity- Mammalian ? Kit size- Convenient sizes (25, 100, 200, 400 assays) ? Applications- Detect early/middle stages of apoptosis; differentiate apoptosis from necrosis. Caspase-8/FLICE Activity Fluorometric Assay Kit: Simple & Convenient fluorometric Assay to Measure Caspase-8/FLICE Activity within 1-2 hrs. Kit Size: 25, 100, 200 and 400 assays. Activation of ICE-family proteases/caspases initiates apoptosis in mammalian cells. The FLICE/Caspase-8 Fluorometric Assay Kits provide a simple and convenient means for assaying the activity of caspases that recognize the sequence IETD. The assay is based on detection of cleavage of substrate IETD-AFC (AFC: 7-amino-4-trifluoromethyl coumarin). IETD-AFC emits blue light (λmax = 400 nm); upon cleavage of the substrate by FLICE or related caspases, free AFC emits a yellow-green fluorescence (λmax = 505 nm), which can be quantified using a fluorometer or a fluorecence microtiter plate reader.