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This EM features the infraciliary lattice (il) which forms a
continuous network at the level of the proximal ends of basal bodies
where the kinetodesmal fibers (kd) are connected to the
posterior basal bodies of a pair. This system is separated by a small
gap from the more superficially located striated bands (sb).
The gap has no apparent fibers connecting these two systems. This
network forms a highly porous boundary between the ectoplasm and the
endoplasm. Electron dense posts are located at each branching site of
this network. It is now known that this network is composed of
centrin, a contractile protein also found in centrosomes of higher
animals including man. 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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