TABLE 2.

Fluorescence lifetime in different parts of the neurons and effect of treatment with the MARK inhibitor 39621

Fluorescence lifetime (ns)	Active growth cones	Inactive growth cones	Axon shaft	Cell body
Activity reporter	1.897 ± 0.007	2.016 ± 0.017	2.020 ± 0.010	1.974 ± 0.013
Non-phosphorylate-able reporter (ARnp)	2.219 ± 0.007		2.223 ± 0.009	2.199 ± 0.011
After 3 h	Active growth cones	Inactive growth cones	39621-treated growth cones	n = 15–25
Fluorescence lifetime (ns)	1.910 ± 0.006	2.018 ± 0.010	2.166 ± 0.013
Migration speed (μm/h)	32.553 ± 2.515	4.209 ± 1.851	5.773 ± 1.195