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. 2016 Oct 20;7:1579. doi: 10.3389/fpls.2016.01579

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Copyright © 2016 Sivankalyani, Sela, Feygenberg, Zemach, Maurer and Alkan.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Microscopic evaluation of resin duct contact with discolored lenticels in surface and deeper transverse histological sections of mango peel stained by safranin and fast-green after 3 weeks of cold storage. (A–F) Transverse sections of mango stored at 5°C, observed at various magnifications (A, B, magnification ×100; C, D, magnification ×200; E, F, magnification ×400) showing discolored lenticels with phenolic accumulation (stained in red) and lenticel connection to resin duct. Dense red-colored granules are seen inside the resin duct. (B,D,F) Are surface cuts and (A,C,E) are deeper cuts. rd, resin duct; lc, lenticel; black arrow, zone of mesophyll cells seen between rd and lc; yellow and red arrows, phenolic transport and accumulation, respectively.