Posterior end of the buccal cavity with a nascent phagosome attached to the cytopharynx. The ribbed wall has ended and the cytopharynx is greatly reduced. The quadrulus goes to the end of the buccal cavity but the peniculi have ended, one or two rows of cilia at a time. The filamentous reticulum still covers the floor of the buccal cavity. Acidosomes are bound to the nascent phagosome and bundles of postoral microtubules lie close to the right edge of the developing phagosome. TEM taken on 1/31/74 by R. Allen with Hitachi HU11A operating at 75kV. Neg. 7,100X. Bar = 1µm.
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. There is a high resolution version of this image in the library (CIL:39161) which is available for quantitative analysis. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).
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