Fig. 1. Expression of Dll1 in the developing mouse telencephalon. (A,B,E-T) Brain sections from ICR mouse embryos at E13.5 (A,E-T) or E16.5 (B) were immunostained with anti-Dll1 alone (A,B) or together with anti-Pcna (E-H), anti-nestin (I-L), anti-Sox2 (M-P) or anti-β III-tubulin (TuJ1) (Q-T). (C,D) Dll1 mRNA in sections of E13.5 ICR mouse brain detected by in situ hybridization. Higher magnifications of the boxed region in C,G,K,O and S are shown in D,H,L,P and T, respectively. NCX, neocortex. Scale bars: 200 µm in A-C; 20 µm in D-T.