MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Transgenic thale cress (Arabidopsis thaliana) growing in a contained environment. The cells of transgenic plants contain genetic material that has been artificially introduced, in addition to their own genetic material. The modification of a plant's genetic content can be used to introduce new characteristics, such as increased yield. Photographed at the University of Milan, Italy.
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