DNA can be visualized by staining the gel with fluorescent dyes, such as ethidium bromide(EB溴化乙锭) electrophoresis chamber buffer solution DNA fragments agarose gel electrode electrode large moderate small Fig 20-1: DNA is separated by gel electrode electrode electrophoresis small dNA fragments move further through the gel than large fragments Copyright 2004 Pearson Education, Inc, publishing as Benjamin Cummings9 Fig 20-1: DNA is separated by gel electrophoresis large moderate small DNA can be visualized by staining the gel with fluorescent dyes, such as ethidium bromide (EB 溴化乙锭)