Sequence comparison of the rat exon 11 with the mouse exon 11. The nucleotide sequences and their deduced amino acids of the mouse exon 11 (mE11) and the rat exon 11 (rE11) are shown by capital letters. Intron sequences are indicated by low letters. The identical nucleotides are indicated by non-italic letters and diverse nucleotides by italic letters. Exon-exon and exon-intron boundaries are indicated by arrows.