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Surface pattern of P. tetraurelia in a region with two basal
bodies in each cortical unit. This is a thin-frozen section labeled
with immunogold showing the location of b-tubulin. The gold lies over the microtubules
of the x-sectioned basal bodies (arrowheads) and ciliary
axonemes (arrow). It also labels tangentially sectioned
transverse (tr mt) and postciliary (pc mt) microtubules.
Neither the infraciliary lattice (il), the less obvious
striated bands (sb) or the kinetodesmal fibers (kd) are
labeled with anti-b-tubulin. EM taken on
7/8/96 by R. Allen with Zeiss 10A TEM. Neg. 12,000X. Bar = 0.5µm.
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