@article{jia_nie_wang_wang_2009,  title={Molecular cloning and expression patterns of the Vasa gene from Rana nigromaculata (Amphibia: Anura)},  volume={26},  ISSN={1984-4670},  url={https://doi.org/10.1590/S1984-46702009000200014},  DOI={10.1590/S1984-46702009000200014},  number={2},  journal={Zoologia (Curitiba)},  publisher={Sociedade Brasileira de Zoologia},  author={Jia, Rui and Nie, Liu-Wang and Wang, Ning and Wang, Jingjing},  year={2009},  month={Jun},  pages={316–322} }