ppt 4 4 gel electropsis loading dyes differ from dna stains two functions of loading dye gel loading dye purple 6x for dna dna loading dye laboratory notes smartglow loading dye with stain for dna gel loading dye 6x fm dye loading unloading experiments tracking dye in gel electropsis dna loading dyes biocompare dna loading dyes biocompare dna loading dyes biocompare