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Genetic research. Conceptual imagery of genetic research. Images of laboratory mice on treadmills having blood samples being extracted by syringes imply research. Artwork of a DNA (deoxyribonucleic acid) strand runs down the left side of the image. This helical molecule carries the genetic code. It is possible to alter this code to produce a desired trait in the offspring of animals such as a mouse, a monkey and theoretically in humans. (KEYSTONE/SCIENCE PHOTO LIBRARY/RICHARD PRIDEAUX)