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Fig. 6. cycB mRNA in gnu ovaries and embryos. In situ hybridization to cycB mRNA in ovaries and 0-3 hours embryos from gnu mutants (A-E) or w[1118] wild type embryo (F). Just as in wild type, cycB mRNA was seen in nurse cell cytoplasm at stage 8 of oogenesis (A) and accumulated in the oocyte cytoplasm, localizing to the anterior of the oocyte from stage 9 (B) to stage 12 (C). At stage 14 (D) the mRNA moved to the posterior where it remained throughout the cytoplasm and concentrated at the posterior pole in the embryo (E).