Figure 1From: The application of methylation specific electrophoresis (MSE) to DNA methylation analysis of the 5' CpG island of mucin in cancer cells Problems with current analysis methods. For crude samples, MSP may indicate that "a region was 50% methylated" while massARRAY indicates that "all CpG sites are 50% methylated". The methylation pattern may be A (extreme pattern) or B (variable pattern). ○, unmethylated CpG site; ●, methylated CpG site.Back to article page