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The finger-like alveolar extension (al) in longitudinal view
lies along the dorsal surface of the filamentous reticulum (fr)
from which the cytopharyngeal ribbons originate. Whiskers of electron
dense material (arrowheads) bind the finger to the cytostomal
cord (cc). Microtubules arising from the dorsal row of basal
bodies of the quadrulus (arrows) are bent posteriorly when they
encounter the filamentous reticulum (fr). EM taken on 4/6/74 by
R. Allen with Hitachi HU11A TEM. Neg. 15,250X. Bar = 0.25µm.
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