Figure 3. BDA-labeled radial cells. Each radial cell has more than 4 primary dendrites that array evenly around its cell soma.

Large radial cells have many more dendrites (∼50) than small radial cells (∼15). (A) Camera lucida drawing of a large radial cell shown in B. Arrowheads indicate the points from which tertiary dendritic branches arise. (B) Micrograph of the radial cell illustrated in A. (C) Camera lucida drawing of a small radial cell. The arrowhead indicates a small caliber primary dendrite that terminates without branching. The arrow points to the neuron's axon. (D) Micrograph of a radial cell illustrated in C. Scale bar: 50 µm.