title: THE FINE STRUCTURE OF PARAVACCINIA VIRUSES.
mesh_terms: D004583:Electrons; D008853:Microscopy; D008854:Microscopy, Electron; D011212:Poxviridae; D011213:Poxviridae Infections; D010285:Pseudocowpox Virus
keywords: MICROSCOPY, ELECTRON; POXVIRUS; POXVIRUS INFECTIONS