The finding To better understand the role of the sheath, Edward Ruby of the University of Wisconsin–Madison and colleagues colonized squid with mutant bacteria that had either no flagellum or one that ...

The primary cilium has gone from being an oddity, with no known function ... A Motility in the Eukaryotic Flagellum Unrelated to Flagellar Beating. Proceedings of the National Academy of Sciences ...

Both swim using thin, bendy flagella that protrude from the cell body and change shape, or deform, to drive the cells forward ...