PATRICK LANDMANN / SCIENCE PHOTO LIBRARY PATRICK LANDMANN / SCIENCE PHOTO LIBRARY
Genetic research. Researcher extracting isolated DNA (deoxyribonucleic acid) from a sample for sequencing. DNA sequencing determines the exact order of the four bases that make up a gene. Genes are regions of DNA that encode how every cell in the body works. Sequencing DNA makes it possible to compare normal and abnormal versions of the same gene, which could reveal the exact cause of a genetic disease. Photographed at the AFM (French Muscular Dystrophy Association), Evry, France.
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