@article{carlos_matta_2009,  title={Microscopic morphology and testis morphometry of captivity-bred Adult bullfrogs (Lithobates catesbeianus Shaw, 1802)},  volume={52},  ISSN={1516-8913},  url={https://doi.org/10.1590/S1516-89132009000600018},  DOI={10.1590/S1516-89132009000600018},  number={6},  journal={Brazilian Archives of Biology and Technology},  publisher={Instituto de Tecnologia do Paraná - Tecpar},  author={Carlos, Jaqueline and Matta, Sérgio Luis Pinto da},  year={2009},  month={Nov},  pages={1461–1472} }