Viral gene therapy. Computer artwork of a strand of DNA (deoxyribonucleic acid, red) being carried by a virus (blue), illustrating the concept of gene therapy using viruses. The two objects are drawn at different scales. The geometric blue structure is the capsid (protein shell) of the virus. The spiral strand is DNA's double helix molecular structure. The first approved gene therapy took place in 1990. Since then, a variety of methods and diseases have been investigated and several pioneering treatments attempted. Viruses are the usual delivery method for gene therapy.
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
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