Examination of the DNA banding pattern in an electrophoresis gel, during the preparation of a DNA sequencing autoradiogram. DNA (obtained from a plant cell in this case) is cut into fragments by a restriction enzyme. These fragments are separated into bands by the electrophoresis process. The banding pattern in pink fluorescence is revealed under ultraviolet light. Photo taken at Escagen, Inc., California, USA. (KEYSTONE/SCIENCE PHOTO LIBRARY/CHR 366 PETER MENZEL/SCIENCE PHOTO LIBRARY) === ===
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