MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Genetic research. Geneticist filling in a laboratory notebook. Photographs of the analyses of DNA (deoxyribonucleic acid) samples by electro- phoresis are seen. Each band (white) in a lane represents a DNA fragment. Electrophoresis separates DNA fragments on the basis of size, by passing them through a gel matrix in an electric field. Photographed at the Telethon Institute of Genetics and Medicine, Naples, Italy.
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