Fig. 4
From: Panarthropod tiptop/teashirt and spalt orthologs and their potential role as “trunk”-selector genes
Expression of Tribolium spalt. In all panels, anterior is to the left, ventral views (except K, lateral view). A´ represents a DAPI staining of the embryo shown in A. Filled circles in B–D, H, J and K mark expression in an internal structure at the posterior end of the embryo. The black asterisk in D marks segmentation gene like expression in the last-formed segment. Red asterisks in J and K mark the anterior expression domain of cap-n-collar (cnc) (the cap). The red arrowheads mark the posterior domain of cnc (the collar). Arrowhead in K point to expression in the amnion. Abbreviations as in Fig. 2; oc ocular region, T thoracic segment