3D reconstructions and raw images of neurons from NL at E13 and E17.

<p><b>A </b><b>and B</b>: High frequency neuron at E13 with total dendritic length of 398 <i>µ</i>m. In <b>B</b> note the dense plexus of dendritic arbors (white arrowheads) in contrast to the well-defined dendritic branches in other regions of NL (white arrowheads in <b>D</b> and <b>F</b>). <b>C </b><b>and D</b>: Middle frequency neuron at E13 with a total dendritic length of 702 <i>µ</i>m. <b>E and F</b>: Low frequency neuron at E13 with a total dendritic length of 1254 <i>µ</i>m. <b>G and H</b>: High frequency neuron at E17 with a total dendritic length of 245 <i>µ</i>m. <b>I and J</b>: Middle frequency neuron at E17 with a total dendritic length of 578 <i>µ</i>m. Note the decrease in the number of primary dendrites from E13 to E17 (compare white arrows in <b>C</b> to <b>I</b>), particularly on the dorsal side. <b>K and L</b>: Low frequency neuron at E17 with a total dendritic length of 1154 <i>µ</i>m. While there appears to be an equal distribution of high order branches at E13 (dashed arrow in <b>E</b>), the high order branches at E17 are located near the terminals (dashed arrow in <b>K</b>), resulting in longer primary dendrites. Scale bar = 15 <i>µ</i>m A–D and G–J; 30 <i>µ</i>m E and F; 50 <i>µ</i>m K and L. Dorsal is up in all panels.