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LA decreased HUVEC proliferation. HUVECs were incubated with LA (500 μM) for 48 h. HUVEC proliferation alterations were assessed using cell counts and EdU labeling, then photographed with a fluorescence microscope at magnifications of × 100. Scale bar represents 200 μm. **P < 0.01 vs. untreated control cells, n = 3/group. LA, α-lipoic acid. Scale bar = 100 μM
