Methylation status of CRC samples defined by melting peak. Melting profiles of the methylation control (M), unmethylation control (U), and (A) the sample with homogeneous methylation (Hom); (B) sample 25 with heterogeneous methylation 1-1 (Hem 1-1); (C) sample 105 with heterogeneous methylation 1-2 (Hem 1-2); (D) sample TN07221 with heterogeneous methylation 2-1 (Hem 2-1); (E) sample 07056 with heterogeneous methylation 2-2 (Hem 2-2).