Fig. 3. Model illustrating the structure of the flagella connector. (A) Procyclic T. brucei cell. The arrow indicates a hypothetical plane of section passing through the region of the flagella connector. (B) Model based on thin-section TEM data. The axonemal outer doublets that are linked to the flagella connector are numbered. (C) Model of the flagella connector structure compatible with both negative staining TEM and thin-section TEM data. (D) Cross-section of the putative organization of protein components in the interacting membrane domains of the flagella.