Figure 2. The C1367T polymorphism. Following the use of restriction enzymes, the gel shows: 1, DNA ladder; 2, PCR product well, demonstrating a 195 bp length sequence; 3, TT well, demonstrating two lengths of DNA of 158 bp and 37 bp; 4, CT well, demonstrating 4 DNA lengths of 158 bp, 93 bp, 65 bp, and 37 bp; 5, CC well, demonstrating 3 DNA lengths of 93 bp, 65 bp, and 37 bp (example taken as control).