Susceptibility to hepatocellular carcinoma associated with null genotypes of GSTM1 and GSTT1

Figure 1 Agarose gel electrophoresis of amplicates from multiple PCR. Lanes 1 and 10 are PCR markers, lanes 2 and 3 indicate non-null genotypes of GSTM1 and GSTT1, lanes 4 and 5 indicate null genotypes of GSTM1 and GSTT1, lanes 6 and 7 indicate null genotype of GSTM1 and non-null genotypes of GSTT1, lanes 8 and 9 indicate non-null genotype of GSTM1 and null genotypes of GSTT1. Fragments of 268 bp indicate internal controls.