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Representative samples of MSP analysis for the methylated (M) and unmethylated (U) forms of six CpG island loci (APC, GSTP1, hMLH1, p16, RASSF1A, and RUNX3) in stomach cancer, colon cancer, and prostate cancer. The positive control was a placental DNA treated with Sss1 methylase before bisulfite modification, and the negative control was distilled water without template DNA. Marker 1 and 2, 100 bp DNA ladder of 14 ng and 3.5 ng, respectively; +, positive control; -, negative control.
