Histological cross-section of testes (left panels) and ovaries (right panels) showing different degrees of development. (A) testis type 1; (B) ovary type 1; (C) testis type 2; (D) ovary type 2; (E) testis type 3; (F) ovary type 3. See section 5.4 in SI Appendix and Table S1 for a complete description of the different gonad types. Sg: spermatogonia; Sc: spermatocyte; Sd: spermatid; Sz: spermatozoa; Tl: testicular lobe; I, primary growth stage; II, cortical alveolus stage, III, early-vitellogenic stage; IV late-vitellogenic stage.
|Acknowledgments:||ZFIN wishes to thank the journal Proceedings of the National Academy of Sciences of the United States of America for permission to reproduce figures from this article. Please note that this material may be protected by copyright. Full text @ Proc. Natl. Acad. Sci. USA|