Common rush stem. Light micrograph of a section through the stem of a common rush (Juncus conglomeratus) plant, showing stellate cells. The stem has scattered vascular bundles suspended by stellate dead cells (pink). There is an outer ring of solid supporting tissue (epidermis) with a thick cuticle (red). Within this, the cortex contains spongy mesophyll with chloroplasts (red ovals), with vascular bundles in-between. The oval vascular bundles have supporting fibres (red) surrounding the outside. Facing the outside of the stem is the circular phloem (blue), and on the inner side the larger xylem vessels (red). Magnification x70 when printed 10 centimetres wide.
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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