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Fig. 2 | BMC Developmental Biology

Fig. 2

From: Expression of NK genes that are not part of the NK cluster in the onychophoran Euperipatoides rowelli (Peripatopsidae)

Fig. 2

Expression of NK2.1 at consecutive developmental stages in embryos of the onychophoran E. rowelli. Anterior is up in ac, eg and left in d; developing limbs are numbered. a–c Expression in the head of consecutive developmental stages in ventral view (arrowheads). Arrow in A indicates an additional domain in the ventral midline of the head, asterisks in C point to the cerebral grooves. d Stage VI embryo in lateral view, dorsal is up. e Anterior trunk of a stage V embryo in ventral view. Asterisks indicate the expression in the ventral nerve cords. f Detail of a developing leg of the same embryo as in E in ventral view. Note the weak expression leading from the nerve cord into the leg (arrowhead). g Anterior trunk of a stage V embryo in ventral view. Asterisks indicate the expression in the ventral nerve cords. Abbreviations: cl, cephalic lobe; de, dorsal extra-embryonic tissue; jw, developing jaw; po, proctodeum; sp, developing slime papilla; st, stomodeum; ve, ventral extra-embryonic tissue. Scale bars: a, c, g: 100 μm; b, e, f: 200 μm; d: 500 μm

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