Fig. 3From: Lack of association between methylenetetrahydrofolate reductase C677T polymorphism, HPV infection and cervical intraepithelial neoplasia in Brazilian womenMTHFR genotypic and allelic frequency in relation to HPV infection. Frequency of CC, CT and TT genotypes (a, c, e), and C and T alleles (b, d, f) according HPV infection (a, b), HPV 16 infection (c, d), and hr-HPV infection (e, f)Back to article page