Résumé : Using fluorescence in situ hybridization, we determined the regional localization of the 3 rat genes encoding angiotensin II receptors at 17q12 (Agtr1a), 2q24 (Agtr1b) and Xq34 (Agtr2). In parallel, we showed that the type 2 human gene, AGTR2, also maps on the X chromosome, at band Xq22.