Figure Caption
Continuous Neurogenesis from the Pallial her4-Positive RG Population
Top: experimental design. Distribution of mCherry-positive neurons (A–F) born from RGs that were her4 positive at the time of 4OHT induction (stages at the bottom right of each panel). Cross-sections at 3 mpf are at identical mid-antero-posterior levels and the level is indicated by a red line on telencephalon dorsal view (A′–F′: mCherry and DAPI staining). Red lines indicate boundaries between territories with mCherry-positive and -negative neuronal cell bodies (mCherry is cytoplasmic in the ubi:switch line [35xUbiquitous transgene expression and Cre-based recombination driven by the ubiquitin promoter in zebrafish. Mosimann, C., Kaufman, C.K., Li, P., Pugach, E.K., Tamplin, O.J., and Zon, L.I. Development. 2011; 138: 169–177
Crossref | PubMed | Scopus (127) | Google ScholarSee all References35], and thus also stains processes). White lines indicate pallial-subpallial boundaries. Green lines delimit the recombined (Dm, medial part of Dl) and un-recombined (lateral part of Dl, Dp) pallial territories in her4switch animals treated with 4OHT (see [21xSpatial regionalization and heterochrony in the formation of adult pallial neural stem cells. Dirian, L., Galant, S., Coolen, M., Chen, W., Bedu, S., Houart, C., Bally-Cuif, L., and Foucher, I. Dev. Cell. 2014; 30: 123–136
Abstract | Full Text | Full Text PDF | PubMed | Scopus (27) | Google ScholarSee all References21]; at any given time point, all pallial RGs are her4 positive [Figure S2xDownload (3.89 MB )
Document S1. Figures S1–S7 and Tables S1–S4Figure S2]; however, the pallial VZ expands laterally over time through the addition of RGs originating from a her4-negative source; therefore, the green lines shift toward the lateral with later recombination times). The her4switch fish in (F) and (F′) was subjected to two consecutive inductions, at 1 dpf (medial neurons only, left to green bar limit) and then at 1.5 mpf (superficial neurons, right to green bar limit). Scale bar, 50 μm.