Representative gel illustrating PCR and MvaI digestion products indicative of the 3 775G>C TCII genotypes.

PCR products measured 218 bp. Complete digestion of the PCR product with MvaI led to 2 fragments measuring 128 and 90 bp. Complete digestion of the PCR product (2 bands) was indicative of the PP genotype (sample 1), partial digestion (3 bands) was indicative of the PR genotype (sample 2), and no digestion (1 band) was indicative of the RR genotype (sample 3).