Fibrous systems in the cortex of P. multimicronucleatum. A
granulo-fibrillar (gf) system fills the tops of the
polygonally-shaped ridges. Below this network are the striated bands
(sb) which link the membranes covering the ridges together in
all directions by inserting into the epiplasm linking the sides of
each depression. Below this is the continuous network of the
infraciliary lattice (il) which lies at the level of the
proximal ends of the basal bodies and is not connected to the
epiplasm. al, alveolar sac; ps, parasomal sac. EM taken
on 12/18/68 by R. Allen with Philips 300 TEM. Neg. 16,000X. Bar =
0.5µm. Published in J. Cell Biol. 49:1-20, 1971.
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