FIGURE 2.
Distribution of <i>HGD</i> variants over the 14 exons of the homogentisic acid oxidase gene. The symbols above the gene represent the 52 variants found in this study, each symbol representing one of the 157 variants. Previously reported variants are filled in black or grey (if a different mutation occurred at the same position) and novel ones are filled in red. The positions of other previously reported variants (not found in the current study) are indicated by unfilled symbols under the gene.