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Antiproliferative effects of unsteamed and steamed (120 °C for 1 h or 2 h) American ginseng root extract on cancer cells determined by the MTS assay. Four doses (0.1, 0.25, 0.5 and 1 mg/mL) were used and the treatment time for SW-480 (A) and HT-29 (B) cells was 72 h; for NSCLC cells (C), it was 48 h. The results are expressed as the mean ± SD of three independent experiments.
