Microtubules.
D000200:Action Potentials; D000818:Animals; D008869:Microtubule-Associated Proteins / Q000502:physiology; D008870:Microtubules / Q000502:physiology* / Q000648:ultrastructure; D008938:Mitosis; D009024:Morphogenesis; D014404:Tubulin / Q000502:physiology*
D008869:Microtubule-Associated Proteins; D014404:Tubulin