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Fig. 11: crystallization stage in trichocyst development

Once the vesicles have grown to 1-2µm in diameter an electron-opaque crystal begins to grow at its center. The paracrystalline material is finely striated. EM taken on 12/9/70 by R. Allen with Hitachi HU11A TEM. Neg. 28,599X. Bar = 0.2µm.
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