Fig. 3. Sna family proteins are expressed in NBs and required for basal localization of Pros and Pon in dividing NBs. Confocal images of ventral views of stage 10 embryos stained with anti-Sna (A), anti-Wor (B) and anti-Esg (C). Anterior is left. (D and E) Double-labelled images of sna/esg double mutant embryos treated with wor RNAi. The NBs are stained with anti-Pros (red, D) and anti-Pon (red, E); DNA staining is green. Note that both Pros and Pon are misplaced in the sna/esg double mutant embryos with wor RNAi treatment. Apical is up.