Fig. 8From: Expression of NK genes that are not part of the NK cluster in the onychophoran Euperipatoides rowelli (Peripatopsidae)Expression of Bari (a–c) and Hhex (d–f) at late developmental stages in embryos of the onychophoran E. rowelli. Anterior is up in a, b, c, f and left in d, d’, e; developing limbs are numbered. a Head of a stage IV embryo in ventral view. a’ Cross section of the head of a stage IV embryo showing the expression in the cephalic lobes. b Head of a stage IV embryo in dorsal view. Arrows point to uncharacterized regions of the developing brain, arrowheads indicate the putative olfactory lobes. c Posterior end of a stage IV embryo in ventral view. Inset shows the expression in the proctodeum (arrowhead) of the same embryo in lateral view, anterior is left, dorsal is up. d Stage IV embryo in lateral view, dorsal is up. d’ Anterior developing legs of a stage IV embryo in ventral view. Empty and filled arrowheads point to the diffuse and stripe-like mesodermal domains, respectively. e Stage VI embryo in lateral view, dorsal is up. f Head of a stage VI embryo in dorsal view. Arrowheads point to the putative olfactory lobes. Abbreviations: an, antennal tract; at, developing antenna; cl, cephalic lobe; cn, central brain neuropil; cx, brain cortex; de, dorsal extra-embryonic tissue; jw, developing jaw; po, proctodeum; sp; developing slime papilla; st, stomodeum; ve, ventral extra-embryonic tissue. Scale bars: a, f: 200 μm; b, c, D’: 100 μm; d, e: 500 μmBack to article page