Gene products involved in the entry of germ cells into meiosis. (A-C) Testis; (D,E) Ovary. (A,D) Tilapia. In situ hybridization analysis for FR-3 (tNos-1) indicated that tNos-1 was expressed in the germ cells of the XX gonads, particularly in the oogenic meiotic cells (D), but not in testicular cells. (B,E) Medaka. (C,F) Zebrafish. We also examined the expression profiles of nos-1 after gonadal formation in zebrafish and medaka. The zebrafish and medaka nos-1 genes were expressed in oogenic meiotic cells, specifically after gonadal formation, but not in testicular germ. Scale bar, 50 μm.

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Stage: Adult
Acknowledgments
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