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Fig. 3: microtubules under pellicle in Didinium

Tangential view of the surface of a non-dividing cell shows several ribbons of microtubules (mt) between the alveolar sac (al) and the epiplasm (ep). The layer of mitochondria under the epiplasm is wrapped with rough ER (er). A peroxisome (per) lies nearby. mu, mucocyst. EM taken on 2/18/69 by R. Allen with Philips 300 TEM. Neg. 20,500X. Bar = 0.5µm.
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