Early application of electron microscopy to biology.
D001419:Bacteria / Q000648:ultrastructure; D001695:Biology / Q000266:history; D006652:Histological Techniques; D049673:History, 20th Century; D008854:Microscopy, Electron / Q000266:history* / Q000295:instrumentation; D008867:Microtomy; D010944:Plants / Q000648:ultrastructure; D014780:Viruses / Q000648:ultrastructure