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Figure 3


Fig. 3. The orientation of the CP microtubules is fixed, and at the same position, in Kinetoplastida species. Representative cross-section micrographs through the flagellum of (A) procyclic-form T. brucei, (B) bloodstream-form T. brucei, (C) epimastigote-form T. cruzi, (D) promastigote-form L. major, (E) promastigote-form H. megaseliae, and (F) choanomastigote-form C. fasciculata. These micrographs had the section angle corrected by the transformation T{theta} to become true transverse section, and they show the CP microtubules always aligned with respect to the doublets 3 and 8. This orientation does not vary in either attached or partially attached flagella (trypanosomes), or free flagella (Leishmania, Herpetomonas, Crithidia). Bars, 50 nm.