Fig. 7. Non-neuronal cells in clones at 48 hpf. (A) Transverse section through a clone in a HuC-GFP-positive embryo. One cell can be seen near the ventricular surface (arrowhead) outside of the HuC-GFP-positive area. Dorsal is to the top. Scale bar: 50 µm. (B) Lateral view of a clone with three radial cells and a neuron. Arrowhead points to the ventricular zone. Scale bar: 10 µm. (C) Typical morphology of a radial cell at 48 hpf. A distinct endfoot is seen at both the ventricular (arrowhead) and pial (arrow) surfaces. Scale bar: 10 µm. (D) Possible lineage trees for the clones containing two neurons (N) and two radial cells (R).

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