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| Detail of cell surface structures. The cell is covered by the plasma membrane and outer alveolar sac membrane (oam) which is separated from the inner alveolar sac membrane (iam) by an extensive alveolar space. Cilia (c) extend through this alveolus to the true cell surface. er, endoplasmic reticulum; m, mitochondrion; bb, basal body; ep, epiplasm; mu, mucocyst. EM taken on 4/1/69 by R. Allen with Philips 300 TEM. Neg. 14,800X. Bar = 0.5µm. |
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