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Fig. 17: spongiome connections to contractile vacuole

Detail of spongiome (spo) of CV. The tubular spo network is continuous with the filling CV (cv) at numerous points (arrows). Some spongiome tubules my be decorated with V-ATPases (arrowheads). er, endoplasmic reticulum; m, mitochondria; fv, food vacuole; mac, macronucleus; iam, inner membrane of alveolar sacs; ep, epiplasm. EM taken on 3/27/69 by R. Allen with Philips 300 TEM. Neg. 6,370X. Bar = 1µm.
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