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Six-week oral dosing of pao pereira extract–induced apoptosis in LNCaP tumor xenografts. A, Cells undergoing apoptosis stained brown (TUNEL staining; ×200 magnification). B, Quantification of apoptotic cells in LCNaP tumor xenografts from each treatment group. Error bars indicate ± SEM; *p < .05, Student t-test.
