Figure 6. Alternate splicing in the guinea pig S-antigen gene. A: Predicted guinea pig S-antigen gene structure from guinea pig retina S-antigen ESTs. B: ESTs aligned to guinea pig genome (scaffold_13) and guinea pig mRNA from GenBank for S-antigen (Sag, Arrestin) (EF457996) generated from NEIBank ESTs. Sag shows that some exons are absent, for example: EST (i) and (iii) are missing exons 6, 7, 8, 9, and 10, EST (ii) and (iv) may terminate early at exons 8 and 5. Note: arrows show introns in the direction of sequence reads.