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Retrograde transport of TfR-GFP in a axon
A 3 day old neuron expressing the membrane protein transferrin receptor (TfR) tagged with GFP. The video shows a rapid playback (6X real time) of a 30 second recording. TfR-GFP vesicles move bidirectionally in and out of the dendrites at an average rate of 1um/sec. The bright spot in the cell body is the Golgi apparatus.