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| The contractile vacuole pore is coated on its cytosolic side by helically wound microtubules. Other microtubules abut this helix and extend out to the surface of the contractile vacuole where they are attached to the CV membrane and hold the contractile vacuole in place. The plasma membrane and CV membrane are separated only by a narrow gap at the bottom of the pore. EM taken on 2/11/71 by R. Allen with Hitachi HU11A TEM. Neg. 19,500X. Bar = 0.2µm. |
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