The cytopharynx in cross section showing the cytopharyngeal microtubular ribbons lying in the plane of the section. Some discoidal vesicles, some containing HRP label, are also seen in planar view. Acidosomes also accumulate near the growing nascent digestive vacuole. The lower ribbon has 10 microtubules showing while, what are probably two ribbons lying side by side, show 22 microtubules in the upper ribbon. A normal sized discoidal vesicle lying flat against a ribbon will overlap with at least 6 microtubules. A strong association of a tubular vesicle with several microtubules probably spreads the tubule into the very regular discoidal shape. The arrow points to the sharp bend in the accessory microtubules coming from the edge of the quadrulus where they contact the filamentous reticulum. TEM taken on 4/18/79 by R. Allen with Hitachi HU11A operating at 75kV. Neg. 14,750X. Bar = 0.25µm.
Standard glutaraldehyde fixation followed by osmium tetroxide, dehydrated in alcohol and embedded in an epoxy resin. Microtome sections prepared at approximately 75nm thickness. The negative was printed to paper and the image was scanned to Photoshop. This digitized image is available for qualitative analysis. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).
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