Table I.

Sizes and Speeds of the Transporting Vesicles of Membrane Proteins in Axons

Membrane proteins		Tubulovesicular organelles						Large globular vesicles*
		vesicle size‡				speed§
		length		width
		μm				μm/s
GAP-43		1.51 ± 0.89		0.54 ± 0.22 (n = 110)		0.76 ± 0.26 (n = 86)		(−)
SNAP-25		1.09 ± 0.51		0.47 ± 0.15 (n = 83)		0.98 ± 0.74 (n = 40)		(−)
TrkA		1.79 ± 2.78		0.53 ± 0.12 (n = 98)		0.88 ± 0.58 (n = 98)		(+)
synaptophysin		1.48 ± 1.01		0.46 ± 0.13 (n = 101)		0.69 ± 0.33 (n = 101)		(+)
TGN-38		1.15 ± 0.74		0.65 ± 0.19 (n = 53)		0.76 ± 0.50 (n = 53)		(+)

^* The existence of large globular vesicles that colocalized with endocytotic markers was indicated as (+).  

^‡ The large globular vesicles were not included.  

^§ Retrogradely moving or stationary vesicles were not included.