A) In mouse line Prism JD1849, in which an Aldh1L1 BAC promoter drives expression of Cerulean, expression is seen in parenchemal astrocytes, as expected, but also in the neurogenic SVZ region (dotted lines) adjacent to lateral ventricles, and choroid plexus (**). B) In bacTRAP mouse line ALdh1L1 JD130, protein (red) labeling is consistent with Aldh1L1 BAC Egfp-L10a expression in all regions, including SVZa (dashed line). All scale bars = 50 micron