Figure 9

Expression of Nvi-Hox4 during postlarval development (a) and regeneration (b–q). Anterior is directed upwards on all panels. All views are ventral. (a) Expression pattern of Nvi-Hox4 in juvenile worm during normal growth. The anterior boundary is stabilized in the first setae-bearing segment and expression is absent from the posterior GZ. Expression of Nvi-Hox4 at 0 hpa (b, j), 4 hpa (c, k), 10 hpa (d, l), 18 hpa (e, m), 24 hpa (f, n), 48 hpa (g, o), 3 dpa (h, p) and 7 dpa (i, q). Asterisks mark food in the gut. Black arrow marks expression domain in mesoderm. Magnification 20×. For details, see text.