GastrulaMesodermCell MovementModels, BiologicalGerm LayersSmear LayerRetinaRetinal Ganglion CellsChromatography, Thin LayerMicroscopy, ElectronNeuronsPyramidal CellsNeocortexMicroscopy, Electron, ScanningTomography, Optical CoherenceSomatosensory CortexImmunohistochemistryVisual CortexDendritesSurface PropertiesEpidermisEntorhinal CortexVibrissaeCerebral CortexIn Situ HybridizationCell DifferentiationSynapsesSuperior ColliculiNeural PathwaysGeniculate BodiesCell CountAction PotentialsTime FactorsAnimals, NewbornRats, Sprague-DawleyOptic DiskVisual PathwaysEpitheliumPhotoreceptor Cells, VertebrateFreeze EtchingExcitatory Postsynaptic PotentialsInterneuronsStaining and LabelingMicroscopy, ConfocalGene Expression Regulation, DevelopmentalCells, CulturedCell WallThalamusOptic NerveMicroscopy, Electron, TransmissionHistocytochemistryElectric StimulationSkinRats, WistarRetinal NeuronsRNA, MessengerNeural InhibitionMolecular Sequence DataOptic Nerve DiseasesMaterials TestingCerebellumCatsGlaucoma