Figure 2. Centriole model.

(A) Ninefold symmetrized cross sections of a map generated by rotational averaging of a daughter centriole at the proximal (left), middle (middle), and distal (right) regions, respectively, with maps generated by subtomogram averaging of triplet, incomplete triple, or doublet averages (those shown in Fig 1C) fitted onto the symmetrized map and superimposed on the right side of each corresponding map. (B) Fully refined, symmetrized, reconstructed/fitted models used for examination of extra-MT densities and inter-MT connections for microtubule triplets and microtubule doublets.