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. 2020 Aug 21;11:830. doi: 10.3389/fphys.2020.00830

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Copyright © 2020 Massey, Urcuyo, Marin, Sarkaria and Swanson.

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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Example bioluminescence images for patient-derived xenografts. Colors represent the BLI radiance (in photons/second/cm²/steradian), which is related to the BLI flux (measured in photons per second) for the total area.