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Fig. 3. Comparison of the genomic structure of AmphiTrk and human Trk
genes. (A) Exonic domain distribution of human TRKA, TRKB and
TRKC. Newly generated introns in human Trk receptors are indicated by
arrows. (B) Exonic domain distribution of AmphiTrk. Domains are
colour coded: purple, signal peptide; green, leucine-rich domains; yellow,
cys-rich clusters; blue, type C2 Ig-like domains; orange, transmembrane
surrounding regions; brown, transmembrane domain; red, tyrosine-kinase
domain.