Figure 2.

Specific Wnt receptors could regulate the progression of neurogenesis in the hippocampus. Schematic illustration of neurogenesis in the SGZ. As represented, stem cells, progenitor cells, immature neuron and mature granule neurons are constantly present in the dentate gyrus. Wnt ligands constitutively expressed in the hippocampus could induce different signaling cascades in these cells and regulate different stages of neurogenesis by interacting with specific receptors (see text for details).