RHO and age-related macular degeneration: Sp et al. have succeeded in nanoparticle-mediated delivery of a full-length, human rhodopsin gene (gRHO) to murine rod photoreceptors, resulting in decreased degeneration; this could be useful in future treatment of retinitis pigmentosa.63 Kwon et al. have synthesized melanin-like nanoparticles with powerful antioxidant properties, which could be utilized as an artificial melanin substitute in murine RPE cells, in turn stemming deterioration seen in AMD.64