title: A simple microcentrifugation tube for electron microscopy.
mesh_terms: D003126:Colostrum / Q000166:cytology; D004912:Erythrocytes / Q000648:ultrastructure; D006801:Humans; D008264:Macrophages / Q000648:ultrastructure; D008854:Microscopy, Electron / Q000295:instrumentation*; D014461:Ultracentrifugation