Motile flagellum with a "3 + 0" ultrastructure

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Science  28 Mar 1980:
Vol. 207, Issue 4438, pp. 1493-1494
DOI: 10.1126/science.7189065


The male gamete of the parasitic protozoan Diplauxis hatti has a flagellum consisting of three doublet microtubules. This flagellum exhibits a helicoidal waveform in which bends propagate toward the tip with a frequency of about 1.5 hertz. It is the simplest motile eukaryotic flagellum yet described.