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metal prints sem metal prints coloured metal prints scanning electron micrograph metal prints pancreas metal prints pancreatic metal prints circulation metal prints circulatory metal prints vein metal prints veins metal prints artery metal prints arteries metal prints capillary metal prints capillaries metal prints human body metal prints anatomy metal prints

photographs sem photos coloured photos scanning electron micrograph photos pancreas photos pancreatic photos circulation photos circulatory photos vein photos veins photos artery photos arteries photos capillary photos capillaries photos human body photos anatomy photos

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Blood vessels. Coloured scanning electron micro- graph (SEM) of a resin cast of pancreatic blood vessels. The fine network of smaller vessels that branches off from the main vessels infiltrates the tissue, supplying it with blood. Gases and nutrients are exchanged between the blood and surrounding tissues through the permeable walls of capillaries, the smallest blood vessels. The pancreas produces the hormones insulin and glucagon, which regulate blood glucose levels. It also secretes digestive enzymes. The cast was made by injecting resin into the blood vessels, followed by chemical digestion of surrounding tissues. Magnification: x30 at 6x7cm size.

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