JOSE CALVO / SCIENCE PHOTO LIBRARY JOSE CALVO / SCIENCE PHOTO LIBRARY
Light micrograph of the renal cortex from a 20 week old foetus. Beneath the renal capsule, the basophilic nephrogenic zone shows the branches of the ureteric bud. Beneath this zone, developing glomeruli can be seen. Magnification: x90 when printed at 10 centimetres tall.
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