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In this colchicine-treated cell, used in an attempt to disrupt its
microtubules, we found that microtubules already formed are not
disrupted in Paramecium. This open cytoproct shows the
microfilaments around the retrieved membrane vesicles. The larger
vesicles appear to be expanded ER as ribosomes can be seen on their
cytosolic face. A long membrane tubule appears to be bound to a
microtubular ribbon (mt) that may have its origin at the
cytopharynx. EM taken on 1/16/73 by R. Allen with Hitachi HU11A TEM.
Neg. 8,100X. Bar = 0.5µm.
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