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| 1 food vacuole; mac, segment of the macronucleus; mic, micronucleus; cv, linked by CV pore to the bacteria-filled chamber; pi, peristome; perioral cilia now closed to the outside. A sand grain (shattered during sectioning) was trapped against the cell by an unknown layer of unstained material. EM taken on 3/17/71 by R. Allen with Hitachi HU11A TEM. Neg. 3,000X. Bar = 2µm. |
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