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19-pca283

Fig. 19: Pca - discharge of trichocyst

When the trichocyst is discharged its body (tric) suddenly elongates 7 times into a long slender thread. Its tip (tt) and tip sheath do not change shape. per, peroxisome; kd, kinetosomal fibers; il, infraciliary lattice. EM taken 11/4/68 by R. Allen with Philips 300 TEM. Neg. 14,800X. Bar = 0.5µm. Published in Poste and Nicolson (eds.) Membrane Fusion, Elsevier/North Holland Biomed. Press, p.733, 1978.
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