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Ech restrained the activity of A549 and H1299 cells. (a) Molecular framework of Ech. (b, c) Cell viabilities of A549 and H1299 cells measured by the CCK-8 method under Ech treatments were used to calculate the IC50 values. (d) The proliferation suppression impact of Ech in A549 and H1299 cells was further verified by EdU assay and relative EdU-positive ratio, respectively. Bar = 50 μm. Data were represented as mean ± SD. ∗P < 0.05 and ∗∗P < 0.01.
