JOSE CALVO / SCIENCE PHOTO LIBRARY JOSE CALVO / SCIENCE PHOTO LIBRARY
Low power light micrograph of a rat kidney stained with H&E displaying the peripheral renal cortex (with many glomeruli) and, in the central medulla, a Malpighian pyramid leading to a renal calyx. The distinction between outer and inner medulla is very clear in this image. Magnification: x18 when printed at 10 centimetres wide.
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