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PSN-A induces apoptosis in prostate cancer cells. (A) LNCaP and DU145 cells were treated with 0, 25 and 50 nM PSN-A for 24 h. Cell samples were prepared as described in methodology. The samples were analyzed by flow cytometry for the detection of apoptosis. (B) Statistical analysis of data from A. Columns with different superscript letter within the same group differ significantly (P<0.05).
