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recorded from all ROIs of the cell of Fig. 1.
A: time courses superimposed according to a color gradient from blue (growth cone: low 
values) to red (soma: high 
values). B: two-dimensional map of the same data. The horizontal and vertical axes are, respectively, time (
) and space (
) coordinates, while the concentration is coded by colors, from blue (low 
values) to red (high 
values).
