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Fig. 4 | BMC Evolutionary Biology

Fig. 4

From: Embryonic expression patterns and phylogenetic analysis of panarthropod sox genes: insight into nervous system development, segmentation and gonadogenesis

Fig. 4

Expression of Tribolium Sox21b and Sox21a. In all panels, anterior is to the left. All panels, ventral views, except for panel i (lateral view). a-e Expression of Sox21b. f-j Expression of Sox21a. Developmental stages are indicated (after Strobl and Stelzer [27]). Arrows in panels d and e point to expression in the VNS (note the faint expression for Sox21a). Arrow in panel i point to expression in the mouth. Arrowheads point to expression in the head. Numbers in panel j mark the primordia of the Malpighian tubules. Abbreviations as in Fig. 2, and mt, Malpighian tubules

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