NGF article 6 controlled study 6 nonhuman 6 priority journal 6 rat 6 Animals 4 BDNF 4 Chromogenic Compounds 4 Endocytosis 4 FACTORES NEUROTROFICOS 4 GDNF 4 Live cell imaging 4 Microtubules 4 Multiprotein Complexes 4 NEUROTROPHIC FACTORS 4 Neurites 4 Neurotrophins 4 PC12 Cells 4 Protein Binding 4 Protein Transport 4 Quantum Dots 4 Quantum dots 4 RET 4 RTK 4 Rats 4 Receptor, Nerve Growth Factor 4 Retrograde axonal transport 4 Sensitivity and Specificity 4 Staining and Labeling 4