AJ PHOTO / SCIENCE PHOTO LIBRARY AJ PHOTO / SCIENCE PHOTO LIBRARY
DNA extraction. Image 4 of 10. Geneticist holding a whole blood sample containing lysis solution. The sample has already undergone lysis, but the process of lysis and centrifugation is repeated until only white blood cells remain in the test tube. It is from the white blood cells that DNA (deoxyribonucleic acid) will be extracted. Photographed at Genethon research laboratory, France. For a sequence of images showing DNA extraction, see G210/976-985.
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