PT - JOURNAL ARTICLE AU - Gorski, Jessica A. AU - Talley, Tiffany AU - Qiu, Mengsheng AU - Puelles, Luis AU - Rubenstein, John L. R. AU - Jones, Kevin R. TI - Cortical Excitatory Neurons and Glia, But Not GABAergic Neurons, Are Produced in the Emx1-Expressing Lineage AID - 10.1523/JNEUROSCI.22-15-06309.2002 DP - 2002 Aug 01 TA - The Journal of Neuroscience PG - 6309--6314 VI - 22 IP - 15 4099 - http://www.jneurosci.org/content/22/15/6309.short 4100 - http://www.jneurosci.org/content/22/15/6309.full SO - J. Neurosci.2002 Aug 01; 22 AB - By homologous recombination of an internal ribosome entry site and Cre recombinase coding region into the 3′-untranslated region of the mouse Emx1 gene, we have generated a strain of mice, Emx1IREScre, that expresses the Cre recombinase in a spatial and temporal pattern like that observed for Emx1. When mated to reporter strains, these mice are a sensitive means to fate-map the Emx1-expressing cells of the developing forebrain. Our results demonstrate that radial glia, Cajal-Retzius cells, glutamatergic neurons, astrocytes, and oligodendrocytes of most pallial structures originate from an Emx1-expressing lineage. On the other hand, most of the pallial GABAergic neurons arise outside the Emx1-expressing lineage. Structures that are located near the basal ganglia (e.g., the amygdala and endopiriform nuclei) are not uniformly derived from Emx1-expressing cells.