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Conservation of the TG splice site found in intron7 of the RYK gene from human to chicken. (a) Human genomic sequence and derived splice variants. Canonical (filled triangle) and TG 3' splice site (open triangle) are marked. (b) Alignment of orthologous exon-intron boundary regions from several vertebrate genomes, splice sites highlighted as in (a). Numbers on the right display the ratios of species-specific ESTs for the TG and AG splice sites, respectively.
