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Fig. 5. Amacrine neurites directed towards the GCL or the OLM show similar motility
rates but significantly different life times. (A) Changes in neurite length
for an OLM-directed process (1) and GCL-directed processes (2,3) of an
amacrine cell (CFP+ line Q11, 54 hpf) over a period of 30 minutes
are plotted in B. Such measurements were used to calculate average motility
rates (C). Average extension rates for processes directed towards the OLM were
found to be 0.17±0.05 µm/minute, and toward the GCL 0.19±0.06
µm/minute. Average retraction rates from the OLM were found to be
0.18±0.05 µm/minute and from the GCL 0.18±0.04 µm/minute.
These rates were not significantly different (n=9 cells; 8-19
processes per group; P>0.05 for all groups, Mann-Whitney rank sum
test). (D) A significant difference was found between the life times of
processes directed towards the GCL (n=17 processes) and the OLM
(n=15 processes; P<0.001, Mann-Whitney rank sum
test).
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