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Agarose gel electrophoresis stained with ethidium bromide showing the amplification of the rs187084 polymorphism of toll-like receptor 9 (1237T/C). M represents the 50 bp ladder. Lanes 1–3: polymerase chain reaction product of 423 bp. Lanes 5 and 6: Homozygous (TT) genotype. Lanes 14 and 15: Homozygous (CC) genotype. Lanes 7–13: Heterozygous (CT) genotype.
