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Paramecium and Other Ciliates: Richard Allen's Image Collection

Chapter 4: Paramecium multimicronucleatum - Trichocysts

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Fig. 1: low magnification view of trichocysts in Paramecium
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Fig. 2: body and tip of a trichocyst
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Fig. 3: trichocysts docked in lateral ridges
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Fig. 4: freeze fracture of plasma membrane-trichocyst fusion sites
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Fig. 5: QF-DE image of plasma membrane trichocyst fusion sites
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Fig. 6: QF-DE of ring and rosette at trichocyst docking sites
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Fig. 7: QF-DE image of trichocyst tip and surrounding cytosol
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Fig. 8: freeze fracture of trichocyst tips, ciliary membrane and septal pores
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Fig. 9: trichocyst development
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Fig. 10: vesicles of developing trichocysts
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Fig. 11: crystallization stage in trichocyst development
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Fig. 12: QF-DE of trichocyst development foci
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Fig. 13: QF-DE of trichocyst vesicles fusing together
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Fig. 14: QF-DE of growing paracrystalline cores in trichocyst development
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Fig. 15: QF-DE of a completely crystallized trichocyst
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Fig. 16: QF-DE of mature trichocysts in various fracture planes
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Fig. 17: microtubules guide trichocyst to docking sites
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Fig. 18: remnants of trichocyst membrane
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Fig. 19: HRP-labeled trichocyst membrane remnants
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Fig. 20: trichocyst membrane remnants after electric shock
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Fig. 21: trichocyst membrane remnants do not associate with TGN
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Fig. 22: QF-DE of extruded trichcyst
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Fig. 23: trichocyst tip in expanded trichocyst
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Fig. 24: lectin labeled trichocyst tips
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Fig. 25: an unexplained result of trichocyst membrane retrieval
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Fig. 26: FITC labeling of monoclonal antibodies to trichocysts