Internucleosomal DNA fragmentation is a hallmark of apoptosis in mammalian cells. BioVision’s Apoptotic DNA Ladder Extraction Kit provides an easy and sensitive means for detecting DNA fragmentation in apoptotic cells. The new procedure selectively extract DNA ladders without interference of intact genomic DNA, which significantly increase the cell numbers that can be can be extracted and load on one agarose gel well, therefore increase the detection sensitivity.