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Effect of LEDs on callus culture for (a) DPPH free-radical savaging activity, (b) Total phenolic content, (c)Total flavonoid content, and (d) Total anthocyanin content of G. procumbens in callus culture. Values are means ± standard deviation (SD) from three replicates (n = 3). Ordinary one-way ANOVA followed by Dunnett’s multiple comparisons test were performed, where p < 0.05 and p < 0.001 are represented as * and ***, respectively.
