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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Fingerprinting analysis of the Aquilariae Lignum fraction (ALF). Five peaks were detected at each retention time (A), and their areas were semiquantified (B). ALF was subjected to UHPLC-MS, and a chromatogram was obtained at a wavelength of 280 nm.