Figure 2. Inka1 expression during mouse embryogenesis.

A–E) Endogenous Inka1 expression detected by whole-mount in situ hybridization. F–M) Expression of the Inka1-LacZ allele detected via β-gal activity. All embryos shown in lateral views except for (B), ventral, and (F) ventral (left) and dorsal (right). BA1 & 2 – branchial arches one & two, CM – cephalic mesenchyme, DRG – dorsal root ganglia, FL – forelimb, H – heart, M – dorsal presomitc mesoderm, O – optic vesicle. Numbers in panel I refer to sections shown in Figure 3(A–D).