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20-tet650129-6a

Fig. 20: Extrusomes - mucocysts along meridians

This section shows one primary meridian (1o) that includes cilium/basal body complexes as well as mucocysts and two secondary meridians (2o) containing only mucocysts. A longitudinal ribbon (lo mt) lies at the crest of the pellicular ridge. Alveolar septa (arrowheads) lie along both meridians. Mucocyst tips (arrows) poke through these septa. poly, polysomes; m, mitochondrion; per, peroxisome; dic, dictyosome; tr mt, transverse microtubules; pc mt, postciliary microtubules; kd, kinetodesmal fiber; ps, parasomal sac. EM taken on 1/29/65 by R. Allen with RCA TEM. Neg. 16,000X. Bar = 0.5µm. Part published in J. Protozool. 14:553-565, 1967.
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