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The effect of CD on cell viability in OSCC cells. OSCC cells were treated with CD (0–100 μM) for 24–72 h. (a) Ca9-22, (b) CAL27, (c) HSC4, and (d) SCC25. Each experiment was performed in triplicate. Error bars denote mean ± SD (standard deviation). ∗p < 0.05 versus untreated cell, respectively.
