Figure 4. YFP expression in the developing telencephalon of Dbx1Cre;ROSA26YFP embryos. A–E', Coronal sections through the telencephalon of E13.5 (A–B') and E15.5 (C–E') Dbx1Cre;ROSA26YFP embryos showing the expression of YFP (A–E), calbindin (CB; A', B', D, E'), and CR (C). B, B' and E, E', High-magnification images of the boxed areas in A' and D, respectively. CP, cortical plate; SVZ, subventricular zone; VZ, ventricular zone. Filled arrowheads point to double-labeled cells, open arrowheads point to calbindin+/YFP− cells; arrows point to calbindin−/YFP+ cells. R26R, ROSA26YFP. Scale bars: A, A', C, D (in A), 100 μm; B, B', E, E' (in B'), 25 μm.