title: Cryo-electron microscopy of unstained frozen-hydrated microtubules.
mesh_terms: D008841:Actin Cytoskeleton / Q000648:ultrastructure; D005614:Freeze Fracturing / Q000379:methods; D005615:Freezing; D008854:Microscopy, Electron / Q000379:methods; D008870:Microtubules / Q000648:ultrastructure*