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editorial

. 2021 Nov 11;12:776871. doi: 10.3389/fendo.2021.776871

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Copyright © 2021 Flatt, Knop and Tarasov

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) Structure of proglucagon, post-translational processing and the major targets of constituent bioactive peptides: glucagon, GLP-1, GLP-2, oxyntomodulin, glicentin and glicentin-related pancreatic polypeptide. (B) Numbers of peer-reviewed publications on proglucagon-derived peptides showing particularly strong surge of research on GLP-1. (C) Publication count by geographical location divided by population of each country (source: PubMed).