--- res: bibo_abstract: - Nestin-cre transgenic mice have been widely used to direct recombination to neural stem cells (NSCs) and intermediate neural progenitor cells (NPCs). Here we report that a readily utilized, and the only commercially available, Nestin-cre line is insufficient for directing recombination in early embryonic NSCs and NPCs. Analysis of recombination efficiency in multiple cre-dependent reporters and a genetic mosaic line revealed consistent temporal and spatial patterns of recombination in NSCs and NPCs. For comparison we utilized a knock-in Emx1cre line and found robust recombination in NSCs and NPCs in ventricular and subventricular zones of the cerebral cortices as early as embryonic day 12.5. In addition we found that the rate of Nestin-cre driven recombination only reaches sufficiently high levels in NSCs and NPCs during late embryonic and early postnatal periods. These findings are important when commercially available cre lines are considered for directing recombination to embryonic NSCs and NPCs.@eng bibo_authorlist: - foaf_Person: foaf_givenName: Huixuan foaf_name: Liang, Huixuan foaf_surname: Liang - foaf_Person: foaf_givenName: Simon foaf_name: Hippenmeyer, Simon foaf_surname: Hippenmeyer foaf_workInfoHomepage: http://www.librecat.org/personId=37B36620-F248-11E8-B48F-1D18A9856A87 orcid: 0000-0003-2279-1061 - foaf_Person: foaf_givenName: H. foaf_name: Ghashghaei, H. foaf_surname: Ghashghaei bibo_doi: 10.1242/bio.20122287 bibo_issue: '12' bibo_volume: 1 dct_date: 2012^xs_gYear dct_language: eng dct_publisher: The Company of Biologists@ dct_title: A Nestin-cre transgenic mouse is insufficient for recombination in early embryonic neural progenitors@ ...