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Fig. 8: pt - CV pore and origin of radial arm microtubules

The contractile vacuole (CV) pore is encircled on its cytosolic surface with microtubules (mts). Other microtubules arise from these encircling microtubules and extend far out into the cell where they provide structural support for the several radial arms of the CVC. This CV was in very late systole or very early diastole. b-tubulin is immunogold labeled. EM taken on 7/5/96 by R. Allen with Zeiss 10A TEM. Neg. 9,780X. Bar = 0.5µm.
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