which technique would best be used to visualize movement of unlabeled vesicles along microtubules? which technique would best be used to visualize movement of unlabeled vesicles along microtubules? deep-etch electron microscopy live cell fluorescence microscopy immunofluorescence microscopy of fixed material computer-enhanced digital video microscopy computer-enhanced digital video microscopy, live cell fluorescence microscopy, immunofluorescence microscopy of fixed material, or deep-etch electron microscopy would be equally useful.