Figure 4. Schematic summary of the trajectories of pyramidal neuron axon initial segments and chandelier neuron axon cartridges labeled with different markers across postnatal development in area 46 of monkey PFC. Lines for each marker represent the percent maximal value achieved plotted against age in months after birth on a log scale. Arrowheads demarcate the indicated ages in months, and the white area indicates the approximate age range corresponding to adolescence in this species. GAT1 indicates GABA membrane transporter 1 ; PV indicates parvalbumin. Reproduced from ref 90: Cruz DA, Lovallo EM, Stockton S, Rasband M, Lewis DA. Postnatal development of synaptic structure proteins in pyramidal neuron axon initial segments in monkey prefrontal cortex. J Comp Neurol. 2009;514:353-367“Copyright©Wiley-Liss 2009.
