LAWRENCE LAWRY / SCIENCE PHOTO LIBRARY LAWRENCE LAWRY / SCIENCE PHOTO LIBRARY
DNA research. Conceptual image of a rack of test tubes containing DNA (deoxyribonucleic acid) molecules, representing genetic research. The DNA double helix is composed of two twisting sugar- phosphate strands linked by pairs of nucleotide bases. The sequence of the bases encodes genetic information.
Model release not required. Property release not required.