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. 2017 Dec 28;23(48):8465–8488. doi: 10.3748/wjg.v23.i48.8465

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©The Author(s) 2017. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial.

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Progressive disappearance (A, saline bath; B, C, left) or recovery (BPC 157 bath; B, C, right) of blood vessels after ligation of the dorsal colon of IC rats (USB microscope camera). Ligation course before therapy (A); ligation course after therapy (B, C). A. Left colic artery and vein major arcade vessels obstructed by two ligations, proximal (left) and distal (right) (L), arcade vessels outside 0, 4 (black circles) or inside 1, 2, 3 (white circles), inside-outside connection absent (arcade 3-arcade 4) (white arrows). B. Five minutes later: inside-outside connection still absent (saline bath, left) (white arrow) or reestablished (black arrow); vessel presentation markedly increased (BPC 157 bath, right). C. From the 10th minute through the end of the 15th minute. Progressive vessel disappearance (saline bath, left) (white arrow); recovered blood vessels (BPC 157 bath, right) (black arrow).