A more extensive freeze-fracture view of the membranelles on the left side of the buccal cavity. Fractures of eighty or more basal bodies can be counted in each of the dorsal three rows of the dorsal peniculus. The fracture plane jumps down into the cilia for most of the ventral peniculus and only a short segment of the quadrulus next to the cytopharynx is exposed in this fracture plane. The ventral peniculus ends where the quadrulus approaches the dorsal peniculus and the ventral row of the dorsal peniculus ends about eleven cilia posterior to this. Only the quadrulus extends to the end of the buccal cavity (not shown). TEM taken on 12/15/75 by R. Allen with Hitachi HU11A operating at 75kV. Neg. 3,000X. Bar = 2µm.
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