Fig. 2.

HPRT promoter bisulphite DNA sequencing results for individual CpG sites: (a) seven clones from male lymphocytes and six from female lymphocytes and (b) 11 clones from untreated T84 cells and 12 from 6TG-treated T84. Each of the 43 CpG sites is shown as a circle, and methylated CpGs are highlighted in black. The base positions relative to the exon 1 start site are shown. Each line represents one clone.