title: Scanning electron microscopic studies on the microstructure of S and R type colonies of Salmonella and Shigella groups.
mesh_terms: D008855:Microscopy, Electron, Scanning; D012477:Salmonella enteritidis / Q000648:ultrastructure*; D012485:Salmonella typhi / Q000648:ultrastructure*; D012763:Shigella flexneri / Q000648:ultrastructure*; D012764:Shigella sonnei / Q000648:ultrastructure*