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| At the base of the buccal cavity (bc), which is surrounded by specialized cytoplasm (sc), an oral rib (or) lined passage opens through the cytostome (cyt) to the single membrane lined cytopharynx (cp) which is corrugated by microtubular lamellae. Discoidal vesicles (disc) accumulate here and wait to fuse with the cytopharyngeal membrane to provide membrane for food vacuole growth (nfv). EM taken on 8/15/67 by R. Allen with Philips 200 TEM. Neg. 12,400X. Bar = 0.5µm. |
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