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. 2021 Oct 20;8:755007. doi: 10.3389/fnut.2021.755007

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Copyright © 2021 Li, Li, Gao, Yang, Liu, Chen and Xu.

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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Visible near-infrared (VIS-NIR) spectrum of (A) three kinds of beef cut and corresponding multispectral images at 500 nm of (B) sirloin, (C) flank, (D) shank; and multi spectral images at 760 nm of (E) sirloin, (F) flank, and (G) shank.