SCHMITT / BSIP / SCIENCE PHOTO LIBRARY SCHMITT / BSIP / SCIENCE PHOTO LIBRARY
Free radicals and cellular DNA. Artwork representing the effect free radicals (zig-zag symbols) have on the DNA (deoxyribonucleic acid, lower left) found in cell nuclei (dark blue, centre). The free radicals are shown entering the cell through the membrane. Surrounding the cell nucleus are some of the cell organelles (mitochondria, green).
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