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. 2021 May 5;11:621914. doi: 10.3389/fonc.2021.621914

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Copyright © 2021 Wang, Yang, Wang, Liu, Pan, Han and Pei

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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Two NIR system. (A) Left one: Lymphatic Fluorescence Imaging System(LFIS) designed by university of Science and Technology of China. (B) Right one: Vascular imager by Langfang Mingde Medical Biotechnology Co.LTD (Langfang Vascular imager).