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. 2021 Apr 14;8:655113. doi: 10.3389/fmed.2021.655113

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Copyright © 2021 Grillo, Campora, Cornara, Cascini, Pigozzi, Migliora, Sarocchi and Mastracci.

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) and the copyright owner(s) 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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(A) Blueberry seed within colic diverticulum with no inflammation (H&E, magnification 4x). (B) Blueberry seed in (A), showing partly preserved starch granules in the endosperm; the seed coat shows evenly thickened inner and radial U-shaped walls, with many pores (H&E, magnification 20x). (C) Papaya seed adherent to the ulcer base of colorectal adenocarcinoma (H&E, magnification 2x). (D) Magnification of a papaya seed showing the characteristic star-shaped outer mesotesta (H&E magnification, 4x).