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. 2010 Mar 15;2:2. doi: 10.3389/fnsyn.2010.00002

Figure 4.

Figure 4

Organization of the pool of synaptic vesicles. (A, B) Two representative examples with a large ((A) 17,138 vesicles) and smaller ((B) 7559 vesicles) total pool of synaptic vesicles (green dots) are given. (C) The graph shows the correlation for the mean number of synaptic vesicles as a function of distance from an AZ (averaged over all AZs) for P28 MFBs (light blue line), adult MFBs (dark blue line), the calyx of Held (green line) and layer 5 input synapses (red line). The light yellow boxes indicate the borders between the RRP, the RP and the reserve pool of synaptic vesicles. Note, that the slope of the curves is markedly higher in the MFBs and layer 5 input synapses when compared with the calyx of Held synapse, even though the spacing between individual AZs is comparable at these synapses.