Image of the pri-miR-34b/c rs4938723 T>C polymorphism using the polymerase chain reaction restriction fragment length polymorphism method. The C allele was digested by the NmuCI restriction enzyme and produced a 26- and 186-base pair (bp) pattern, while the T allele was undigested (212-bp fragment). M, DNA marker; lanes 1 and 4, TT; lane 2, TC; lane 3, CC.