| 11. | Within the oocyst, meiosis occurs, yielding the sporozoites.
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| 12. | Immature sporozoites break through the oocyst wall into the haemolymph.
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| 13. | The sporozoites then migrate to the salivary glands and complete their differentiation.
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| 14. | Within the endothelial cells, the sporozoites undergo asexual reproduction becoming schizonts.
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| 15. | In the first phase sporocysts containing sporozoites infective to the vertebrate host.
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| 16. | The oocyst undergoes meiosis and then mitosis producing numerous sporozoites.
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| 17. | The sporozoites may also invade liver parenchyma or tissue macrophages.
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| 18. | The sporocysts are bivalved and give rise to multiple sporozoites.
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| 19. | This vaccine contained antigens from the blood and sporozoite stage.
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| 20. | These stages include sporozoites, which are injected by the insect sexually reproduce.
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