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5200 The Sea Urchin Embryology (Psammechinus miliaris). - 12 Microscope Slides - 1. Sea urchin, unfertilized eggs 2. Sea urchin, fertilized eggs 3. Sea urchin, two cells 4. Sea urchin, four cells 5. Sea urchin, eight cells 6. Sea urchin, sixteen cells 7. Sea urchin, thirty-two cells 8. Sea urchin, morula 9. Sea urchin, blastula 10. Sea urchin, blastula, beginning gastrulation 11. Sea urchin, blastula, progressive gastrulation 12. Sea urchin, pluteus larva
The microslides are supplied in a slide box.