CAROL & MIKE WERNER / VISUALS UNLIMITED, INC. / SCIENCE PHOTO LIBRARY CAROL & MIKE WERNER / VISUALS UNLIMITED, INC. / SCIENCE PHOTO LIBRARY
Biomedical illustration of malignant tumours in the gastrointestinal tract with medicine or therapeutic genes being carried by nanovectors (upper left and in the blood stream) directly to the cancerous cells (lower right). Another tumor is visible at the centre of the picture.
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