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Examples of ray-finned fish–specific duplicated genes with diverged expression patterns. For genes with known mammalian orthologs, the expression in mouse is shown below. Estimated times of gene duplication are indicated with arrows. Domain architectures were retrieved from PFAM. (CD3_z) T-cell surface glycoprotein CD3 zeta chain; (GPCR) G-protein coupled receptor; (SH2/3) Src-homology 2/3.
