Figure 3From: Tri-partite complex for axonal transport drug delivery achieves pharmacological effectEffects of molecular charge on neuronal uptake and transport. (a) lack of uptake of WGA-dextran-FITC after carboxyl derivatization resulting in negative charge.(b) good uptake with neutral charge from 50:50 carboxyl and amine derivatization. (c) good uptake with positive charge from amine derivatization. Scale bar is 120 μm.Back to article page