Table II.

Analysis of transport parameters for anterograde and retrograde syb-GFP containing vesicles in wild-type and mutant segmental nerves

Genotype	Anterograde runs					Retrograde runs
	Velocity	P-value	Run length	P-value	n	Velocity	P-value	Run length	P-value	n
	µm ± SD		µm/s ± SD			µm/s ± SD		µm ± SD
D42-GAL4; FSPWT	0.78 ± 0.13	NA	9.6 ± 2.5	NA	54	−0.72 ± 0.15	NA	9.2 ± 3.1	NA	80
D42-GAL4/FSPAM	0.5 ± 0.17*	<0.0001	6.8 ± 3.1*	<0.0001	76	−0.55 ± 0.11*	<0.0001	7.2 ± 2.5*	<0.0001	97
D42-GAL4; FSPGM	0.44 ± 0.15*	<0.0001	6.1 ± 2.7*	<0.0001	81	−0.48 ± 0.18*	<0.0001	7.4 ± 3.3*	<0.0001	135

Mean velocity and run length for both anterograde and retrograde moving particles are reduced in mutant β-spectrin larvae in comparison to wild type. Data shown represent mean ± SD. Asterisks denote statistical significant differences for mutant relative to wild type. NA, not applicable.