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| Cross sections of a pair of basal bodies showing the triplet makeup of the 9 fibers; only one microtubular fiber is complete in each triplet (arrow) while the other two microtubular fibers share some subunits with their neighbors. tt, cross-sectioned trichocyst tips sectioned at different levels; kd, kinetodesmal fiber; pc mt, postciliary microtubules; tr mt, transverse microtubules. EM taken on 2/3/69 by R. Allen with Philips 300 TEM. Neg. 47,100X. Bar = 0.1µm. |
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