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Figure 1


Fig. 1. Endodyogeny of Toxoplasma gondii tachyzoites. Diagrams of longitudinal sections of T. gondii parasites at various stages during replication. Subcellular structures (A, interphase) include, proceeding from the apical to the basal end: the conoid (black lines), inner-membrane complex (light green lines), rhoptries (turquoise), micronemes (lavender), dense granules (blue), apicoplast (pink), mitochondrion (red), Golgi (gold) and nucleus (grey), bordered by endoplasmic reticulum (yellow). Mid-way through daughter cell formation (B), the developing daughter IMC scaffolds (dark green) encompass the Golgi and apicoplast (which have already divided), and the nucleus begins to bifurcate. Hatched turquoise indicates breakdown of the maternal rhoptries, and de novo synthesis of daughter rhoptries, which have not yet acquired their mature club-like shape (other organelles not colored and mitochondrion not shown, for clarity). (C) Daughter IMC complexes then grow to establish two complete daughter parasites, which are about to emerge, acquiring their plasma membrane from the mother.





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