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Basal body formation occurs most prominently in the equatorial region
of the predivision cell. A new basal body (probb) begins to
develop perpendicular to the mature basal body at its proximal
anterior surface. The basal body lengthens and tilts toward the
surface. At first no new accessory microtubular ribbons or
kinetodesmal fibers are observed, only those accessories associated
with the mature basal bodies are present. kd, kinetodesmal
fiber; pc mt, postciliary microtubules; tr mt,
transverse microtubules. EM taken on 8/14/67 by R. Allen with Philips
200 TEM. Neg. 19,200X. Bar = 1µm.
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