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Tangential section through the buccal cavity showing the close
spacing of the cilia in the undulating membrane (um) and 3
presumably nonciliated basal bodies in the inside row. Accessory
microtubular ribbons arise from the basal bodies of the inner row
(arrows) and extend upward toward the oral ribs. Microtubular
ribbons (arrowheads) in the oral ribs are sectioned obliquely
and alveolar (al) segments lie between the ribbons. Portions of
two membranelles are seen in the buccal cavity (bc). EM taken
on 8/15/67 by R. Allen with Philips 200 TEM. Neg. 12,400X. Bar =
0.5µm.
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