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Fig. 13: QF-DE of trichocyst vesicles fusing together

A field of small trichocyst precursor vesicles. A small core of condensed material occupies the center of each vesicle that is linked by threads to the membrane. This resembles the loose matrix of more mature trichocysts (see later figures). The pitted E-face of these vesicles is typical of the membrane of trichocyst precursor vesicles. In two cases vesicles have fused (arrows). EM taken on 5/25/92 by R. Allen with Zeiss 10A TEM. Neg. 19,800X. Bar = 0.2µm. Part published in Int. Rev. Cytol. 198:277-318, 2000.
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