MicrovilliPigment Epithelium of EyeMicroscopy, ElectronCell PolarityEpitheliumEpithelial CellsCytoskeletal ProteinsMicroscopy, Electron, ScanningMicrofilament ProteinsCell MembraneActinsCytoskeletonMicroscopy, ImmunoelectronIntestinal MucosaMicroscopy, Electron, TransmissionIntestine, SmallPhalloidineKidney Tubules, ProximalCilia