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Seminiferous Tubules (human)

Seminiferous Tubules (human). Ovary (cat). Ovum (squirrel). Primordial Follicle (human). Secondary Follicle (human). Addition of Yolk to Oocyte by Follicle Cells. Maturing Secondary Follicle (monkey). Secondary Ooocyte in Antral Follicle (human). Oogenesis – formation of polar bodies

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Seminiferous Tubules (human)

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  1. Seminiferous Tubules (human)

  2. Ovary (cat)

  3. Ovum (squirrel)

  4. Primordial Follicle (human)

  5. Secondary Follicle (human)

  6. Addition of Yolk to Oocyte by Follicle Cells

  7. Maturing Secondary Follicle (monkey)

  8. Secondary Ooocyte in Antral Follicle (human)

  9. Oogenesis – formation of polar bodies (rat, human, and mouse, respectively)

  10. (Click on the link to run the animation) Meiosis http://biology-web.nmsu.edu/houde/MEIOSIS.mov (Close the movie window to return to this presentation)

  11. Frog (Xenopus) Oogenesis http://biology-web.nmsu.edu/houde/frogoogenesis.mov

  12. Fertilization - Acrosome Reaction and Cortical Reaction

  13. Sea Urchin rhodamine phalloidin staining of fertilization cone (explosive actin polymerization) http://biology-web.nmsu.edu/houde/Rhphalloidinstainingfertilizationcone.mov

  14. Inositol triphosphate (IP3) is a second messenger released from phosphatidyl inositol bisphosphate (PIP) by phospholipase C, and binds to and activates a calcium channel in the endoplasmic reticulum, releasing a wave of Ca++ that spreads across the ovum. Calcium ion stimlates the release of cortical granules to the perivitelline space, which widens as a slow block to polyspermy and deactivates bindin receptors.

  15. Sea Urchin Cortical Reaction phase contrast left intracellular Ca++right http://biology-web.nmsu.edu/houde/mk0780641001.mov

  16. Sea Urchin fusion of egg and sperm pronuclei http://biology-web.nmsu.edu/houde/Fusioneggspermpronuclei.mov

  17. Ascidean Cortical Rotation

  18. frog (Xenopus) cortical rotation (follows gravitational rotation) http://biology-web.nmsu.edu/houde/corticalrotation.mov

  19. frog (Xenopus) gravitational rotation, Cleavage http://biology-web.nmsu.edu/houde/fert2.mov

  20. Branchiostoma Cleavage and Blastulation

  21. Xenopus Blastulation

  22. frog (Xenopus) Blastulation http://biology-web.nmsu.edu/houde/xenopus embryo.mov

  23. Branchiostoma Gastrulation

  24. Xenopus Zygote Cytoplasmic Fate Map

  25. Xenopus median section blastulation – bottle cells

  26. Xenopus Vegetal and Median Gastrulation

  27. Frog (Xenopus) Gastrulation, formation of yolk plug, Neurulation http://biology-web.nmsu.edu/houde/RKellergastrulation.mov

  28. Xenopus Median and Parasagittal Gastrulation

  29. Frog (Xenopus) Gastrulation – median optical section http://biology-web.nmsu.edu/houde/froggastmedianopticalsection.mov

  30. Keller sandwich Cutout (frog) http://biology-web.nmsu.edu/houde/sandwich_cutout.mov

  31. Keller sandwich explant (chordaneural elongation) http://biology-web.nmsu.edu/houde/Kellersandwichdorsallipexplant.mov

  32. Branchiostoma Neurulation

  33. Xenopus Neurulation

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