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Comparable frequencies but lower reactive oxygen species (ROS) levels in bone marrow endothelial cells (BM ECs) from young donors than from elderly donors. Representative gating strategy for BM ECs (CD34+CD309+CD133+) from healthy donors (a). Frequencies of BM ECs in BM mononuclear cells (MNCs) (b) and intercellular ROS levels in BM ECs (c) among young, middle‐aged and elderly donors. The data are shown as the mean ± standard error of the mean (SEM)
