BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Colour-enhanced Transmission Electron Micrograph (TEM) showing the brush border of a human kidney. Also called the striated border, this is a microvilli-covered surface of simple epithelial cells. In the kidney, the brush border is useful in distinguishing the proximal tubule (in which it is present) from the distal tubule. Freeze-etch method; magnification: 35,000x magnification, 7.5 x 9 print.
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