DNA Sequencer are tools used to map out sequences of bases found inside of a DNA molecule. There are four types of bases T (thymine), G (guanine), A (adenine) and C (cytosine). These base pairs carry information in DNA needed for a cell to assemble protein an RNA molecules. System we sell come complete with computer workstation and tested to meet factory specification, unless otherwise noted within the product listing page. We include images and video of each Sequencer we sell, so there’s complete transparency to our buyers.