File:Rugh 005.jpg

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Early Development of the Frog's Egg

Stage 2. 1 hr postfertilization. Right side view.

Stage 3. First cleavage

Stage 4. Second Stage 5. Third at 3.5 hrs. Posterior cleavage at 4.5 hrs. cleavage at 5.4 view. Right side view. hrs. 8 cells.

Stage 7. Fifth cleavage. 32 cells at 7 hrs.

Stage 10. Earliest involution of dorsal lip of 26 hrs. Pos terior view.

Stage 11 Extension of dorsal to lateral lips at 34 hrs. Posterior view.

Stage 12 Complete lip involution, encircling yolk at 42 hrs.


Historic Disclaimer - information about historic embryology pages 
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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)
Frog Development (1951): 1 Introduction | 2 Rana pipiens | 3 Reproductive System | 4 Fertilization | 5 Cleavage | 6 Blastulation | 7 Gastrulation | 8 Neurulation | 9 Early Embryo Changes | 10 Later Embryo or Larva | 11 Ectodermal Derivatives | 12 Endodermal Derivatives | 13 Mesodermal Derivatives | 14 Summary of Organ Appearance | 15 Glossary | 16 Bibliography | Figures

Reference

Rugh R. Book - The Frog Its Reproduction and Development. (1951) The Blakiston Company.

Cite this page: Hill, M.A. (2024, April 18) Embryology Rugh 005.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Rugh_005.jpg

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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current14:36, 6 April 2013Thumbnail for version as of 14:36, 6 April 20131,200 × 792 (237 KB)Z8600021 (talk | contribs)==Early Development of the Frog's Egg== Stage 2. 1 hr postfertilization. Right side view. Stage 3. First cleavage Stage 4. Second Stage 5. Third at 3.5 hrs. Posterior cleavage at 4.5 hrs. cleavage at 5.4 view. Right side view. hrs. 8 cells. Sta...

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