Figure 9From: Molecular characterization and embryonic origin of the eyes in the common house spider Parasteatoda tepidariorum Embryonic expression of six3 homologues in the head of P. tepidariorum. (A to E) Expression of Pt-six3.1 during head development. Two separate domains in the brain anlage are denoted by arrowheads in A to C. The black arrow in A denotes expression along the anterior end of the head lobes. Expression in the labrum is denoted by a white arrow in A. The white arrowheads in D and E point to the tripartite expression in the brain primordium that develops from the earlier lateral expression domains (white arrowheads in A to C). (F to J) Expression of Pt-six3.2 during head development. Expression in the lateral eye primordia is denoted by arrowheads in H to J. All embryos are shown in frontal aspect. The developmental stage is indicated in each panel in the lower left corner.Back to article page