Coloured scanning electron micrograph (SEM) of a renal corpuscle in the kidney. The renal corpuscle is formed by the glomerulus (red), the convoluted capillary at centre, which is surrounded by the Bowman's capsule, partly visible here as a white-brown menbrane at centre right. In the glomerulus blood is filtered. The filtrate is composed of waste and toxic products such as urea and chloride and nutrient substances. The filtrate is collected by the Bowman's capsule and then distributed to a network of tubules called nephrons two of which are visible coloured blue. Magnification: x330 at 6x7cm size.
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