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Elastic fibres. Light micrograph of elastic fibres (gold) in a sample of tissue from the mesentery. The mesentery is a membranous fold of the small intestine, which attaches it to the back of the abdominal wall. It has a rich blood supply, delivered by branching capillaries (dark lines). Numerous round fat (adipose) cells are also seen. Silver stain. Dark field illumination. Magnification: x50 at 6x7cm size x25 at 35mm size. (KEYSTONE/SCIENCE PHOTO LIBRARY/INNERSPACE IMAGING)