“…RA exposure stimulates neurogenesis in neural stem cell cultures isolated from the embryonic striatal SVZ or adult hippocampus (Wohl and Weiss, 1998;Takahashi et al, 1999). Prolonged oral RA administration also increases adult rat SVZ cell proliferation (Giardino et al, 2000). Moreover, the lateral ganglionic eminence (LGE), which gives rise to the striatum under the influence of RA, evolves into the postnatal forebrain SVZ and is a source of olfactory bulb neurons (Anderson et al, 1997;Wichterle et al, 1999;Toresson and Campbell, 2001;Stenman et al, 2003).…”