JOSE CALVO / SCIENCE PHOTO LIBRARY JOSE CALVO / SCIENCE PHOTO LIBRARY
Light micrograph showing kidney convoluted tubules stained with Mallory's trichrome. Both the brush border and the basement membrane surrounding the tubule are clearly highlighted, both stained with Mallory's aniline blue. The distal convoluted tubules show a wide lumen because they lack a brush border. Magnification: x180 when printed at 10 centimetres wide.
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