Moreover, the immunoreactivity for rhodopsin (rods marker) decreased in the ADHD model (6.7 × 105 ± 4.7 × 104 and 5.3 × 105 ± 4.3 × 104 arbitrary units for WKY Veh and SHR Veh, respectively; Figure 3D). The gene discussed is RHO; the disease is attention deficit-hyperactivity disorder.