Figure 1.

Schematic representation of GBA and psGBA. Exons are depicted as boxes with identification numbers inside. Alu sequences are represented as black boxes. The PCR-amplified and sequenced areas are indicated. The transcripts for both regions are represented with smaller boxes under each region: (a) psGBA transcript described by Sorge et al. (1990); (b) psGBA transcript described by Imai et al. (1993). The length of all tracts is roughly proportional to their actual nucleotide length.