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Amino acid alignment of the quail EDNRB2 (in white on a black background), quail EDNRB (16), rat EDNRB (18), Xenopus EDNRC (14), and rat EDNRA (43). The residues in common between EDNRB2 and other endothelin receptor are presented on a gray background. Transmembrane domains are underlined. The region of the molecule whose sequence has been amplified by RT-PCR is located between the two arrows (representing the oligonucleotides).
