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                                                Venule - histology slide
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                                                Venule: With a vein valve; cross-section; human. Optical microscopy technique: Bright field. Magnification: 600x (for picture width 26 cm ~ A4 format).
 Histology slide by Doc. RNDr. Josef Reischig, CSc., via Wikimedia Commons
 
 This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. https://creativecommons.org/licenses/by-sa/3.0/deed.en/
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