This ladder is made from the two plasmids pPSU1 and pPSU2 linearized with a unique cutting enzyme and both plasmids digested with EcoRV.
Henrici RC, Pecen TJ, Johnston JL et al. The pPSU Plasmids for Generating DNA Molecular Weight Markers. Sci Rep 2017;7:2438.
bp pixels 500 366 750 296 1000 246 1500 183 2000 146 3000 104 4000 84 5000 70 7750 50 10000 41