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Antiproliferative activity of (a) methanol extracts and (b) water extracts of Chamaecyparis obtusa (CO) leaves (0–1.25 μg/mL) against HCT116 human colon cancer cells. Cells were treated with the extracts for 24 h. Data represent the mean of the percentage of control in triplicate tests. * p < 0.05, ** p < 0.01 and *** p < 0.001 indicate statistically significant difference compared to the control analyzed by the student’s t-test.
