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| Four parasomal sacs (arrows) showing them in longitudinal section each at the base of a surface depression. Trichocysts extend into each lateral ridge (lateral ridges do not have kinetodesmal fibers). Bulbous ends of parasomal sacs are covered with clathrin cages. EM taken on 4/7/80 by R. Allen with Hitachi HU11A TEM. Neg. 12,250X. Bar = 0.5µm. |
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