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wood prints scanning electron micrograph wood prints kidney wood prints glomerulus wood prints glomeruli wood prints podocyte wood prints podocytes wood prints capillary wood prints medulla wood prints renal corpuscle wood prints pedicel wood prints pedicels wood prints urinary system wood prints human body wood prints sem wood prints kidney glomerulus wood prints

photographs scanning electron micrograph photos kidney photos glomerulus photos glomeruli photos podocyte photos podocytes photos capillary photos medulla photos renal corpuscle photos pedicel photos pedicels photos urinary system photos human body photos sem photos kidney glomerulus photos

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Coloured scanning electron micrograph (SEM) of a kidney glomerulus (podocytes and capillaries of the renal corpuscle). The glomerulus consists of a tightly coiled network of capillaries surrounded by podocytes. There about 1 million glomeruli in each kidney. Podocytes have narrow cell extensions (processes) that give rise to secondary extensions called pedicels. The podocytes completely surround the capillary system. As blood passes through each glomerulus, water and metabolic wastes are filtered through capillary walls by the surrounding podocytes. About 100 liters of blood are filtered every hour. The water and waste pass into the lumen of the Bowman's capsule from which it drains into the surrounding tubules where reabsorption occurs. Magnification: x800 when shortest axis printed at 25 millimetres.

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