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Ndufa4 gene transcript in CDs/y and CDr/y. Intact Ndufa4 gene transcript in CDr/y (top) and incomplete gene transcript in CDs/y with deletion of exon 3 (in light gray) (bottom), causing a frameshift mutation and leading to the formation of a TGA stop codon (red). Underlined adjacent nucleotides represent codons defining amino acids for protein synthesis.
