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. 2022 Feb 14;12(2):177. doi: 10.3390/metabo12020177

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© 2022 by the authors.

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 (https://creativecommons.org/licenses/by/4.0/).

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Plasma GPC level declines during aging. (A) Scheme of chemical structure for GPC. (B) Heat-map analysis of GPC signal intensity in plasma samples from middle-aged (n = 25) and elderly people (n = 25). Each column in the heat map represents one age group, and each row represents one sample from the middle-aged or elderly group. Plasma GPC level was detected by UPLC-ESI-MS/MS. (C) The relative abundance of plasma GPC in each group. ** p ≤ 0.01; by unpaired t test. Values are mean ± s.e.m.