Antigens, Differentiation/metabolism; Apoptosis/physiology; Cell Lineage/physiology; Multipotent Stem Cells/metabolism; Neural Stem Cells/metabolism; Proteins/metabolism; Animals; Antigens, Differentiation/genetics; Astrocytes/cytology; Astrocytes/metabolism; Basic Helix-Loop-Helix Transcription Factors/genetics; Basic Helix-Loop-Helix Transcription Factors/metabolism; Cell Line; Eye Proteins/genetics; Eye Proteins/metabolism; Homeodomain Proteins/genetics; Homeodomain Proteins/metabolism; Intermediate Filament Proteins/genetics; Intermediate Filament Proteins/metabolism; Intracellular Signaling Peptides and Proteins; Mice; Mice, Transgenic; MicroRNAs/genetics; MicroRNAs/metabolism; Multipotent Stem Cells/cytology; Nerve Tissue Proteins/genetics; Nerve Tissue Proteins/metabolism; Nestin; Neural Stem Cells/cytology; Oligodendrocyte Transcription Factor 2; PAX6 Transcription Factor; Paired Box Transcription Factors/genetics; Paired Box Transcription Factors/metabolism; Proteins/genetics; Repressor Proteins/genetics; Repressor Proteins/metabolism