Figure 3. Methylated fraction in the RFC1 gene in normal placenta (n = 4), leukocytes from subjects with low tHcy (c = 5–10 µmol/L, n = 22–24), and leukocytes from subjects with high tHcy (c = 20–113 µmol/L, n = 21–24). The error bars show ± 1 SD. The upper panel shows CpG sites 1–24 and the lower panel shows CpG sites 25–55.