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The division furrow of a dividing Didinium. A thick layer of
epiplasm (ep) coated on the cytosolic side by mitochondria
(m) forms the constricting ring in the furrow. As usual
mucocysts lie between the epiplasm and the pellicular membranes. The
new cytopharynx in the opisthe already has lamellae (l) and the
alveolus seems to be absent from this region. The macronucleus
(mac) is constricted in the furrow and elongated nucleoli
(no), stretched out along microtubules (mt) (requires
enlargement), are evident. tox, toxicyst; bact,
bacteria. EM taken on 5/21/69 by R. Allen with Philips 300 TEM. Neg.
5,000X. Bar = 1µm.
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