title: Marriage of convenience:  the motility of the modern cell may reflect an ancient symbiotic union.
authors.affiliation: Botany Department, University of Massachusetts at Amherst, USA.
authors.forename: L
authors.initials: L
authors.lastname: Margulis
authors.forename: M
authors.initials: M
authors.lastname: McMenamin
mesh_terms: D000818:Animals; D001105:Archaea; D001419:Bacteria; D005075:Biological Evolution; D002468:Cell Physiological Phenomena; D004783:Environmental Microbiology; D005057:Eukaryotic Cells; D008163:Luminescent Measurements; D008870:Microtubules; D009068:Movement; D015388:Organelles; D013559:Symbiosis