Fig. 5. Multiple outer-doublet loss occurs more frequently at the anterior of the cell. (A-E) The number of outer doublets was quantified at various positions along the axoneme. Graphs show the number of outer doublets present plotted against the frequency of occurrence in flagella profiles observed. Inset images show representative micrographs of flagella profiles at each position. The arrow in D indicates the break between two outer doublets that is observed prior to doublet loss. (F) Drawing of a T. brucei cell indicating the positions along the flagellum quantified in A-E.