Imaging / Fluorescence Microscopy / Nanoparticles / Multidisciplinary / Quantum Dots / Computer Systems / Animals / Astrocyte / Astrocytes / Real Time / In Vivo / Rats / Model System / Quantum Dot / Cell Survival / Computer Systems / Animals / Astrocyte / Astrocytes / Real Time / In Vivo / Rats / Model System / Quantum Dot / Cell Survival