Quick-freeze deep-etch rotary-shadowed replica of a portion of the chemically-unfixed cytopharynx. The cytopharynx is continuous with the plasma membrane and is covered by only one membrane which is pleated over the ends of the cytopharyngeal microtubular ribbons. Numerous discoidal vesicles are bound single file along the anterior side only of each ribbon. This is the site where discoidal vesicles fuse with the cytopharyngeal membrane to form the digestive vacuole. TEM taken on 5/18/88 by C. Schroeder with Zeiss 10A operating at 80kV. Neg. 6,300X. The raw negative was scanned with an Epson Perfection V750 Pro and this high resolution image is best used for quantitative analysis. Additional information available at (http://www5.pbrc.hawaii.edu/allen/). Part published in J. Cell Biol. 111:2553-2562, 1990. Adapted with permission.