Fig. 2
From: FoxB, a new and highly conserved key factor in arthropod dorsal–ventral (DV) limb patterning
Expression of Parasteatoda tepidariorum FoxB. In all panels, anterior is to the left representing ventral views, except b, f, and u (lateral views). Dotted lines in a–d mark borders of the embryo proper. The asterisk in c marks a first stripe of enhanced expression. Arrows in h, k and m point to expression in the ventral nervous system. Embryos of the same stage (e–r, t, u) represent different views on the same embryo. ch chelicera, cu cumulus, L1–L4 first to fourth walking leg, O2–O5 second to fifth opisthosomal segment, pp pedipalp, s stomodaeum, saz segment addition zone