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Effects of the methanolic extract of Piper nigrum fruits (50 and 100 mg/kg) on DNA fragmentation by agarose (1.5%) gel electrophoresis. Lane 1: DNA ladder; lane 2: control group; lane 3: Aβ (1–42) alone-treated group; lane 4: Aβ (1–42) + P50 group and lane 5: Aβ (1–42) + P100 group.
