Figure 5

Expression of slp in the regio germinalis . All embryos are oriented with anterior to the left and represent ventral views. In all panels the asterisks mark progression of the early anterior expression domain. (A- C) Blastoderm stage embryos of subsequent stages. (D) Stage 0.2 embryo. (E) Stage 0.3 embryo. Arrowhead points to central region of the stripe covering premandibular+mandibular segments. (F) Later stage 0.3 embryo. The premandibular+mandibular stripe (asterisk) splits; transcripts in the centre of this domain disappear. The arrow points to faint expression in the postmaxillary segment. Arrowhead as in (E). (G) Stage 0.4 embryo. Arrow and arrowhead as in (E). (H) Stage 1.2 embryo. Arrowhead as in (E). Abbreviations as in Figure 1.