title: [Observations on extracellular rickettsias (Rickettsia mooseri and R. quintana) and experimental modification of their properties].
mesh_terms: D000818:Animals; D003470:Culture Media; D005110:Extracellular Space; D005827:Genetics, Microbial; D006168:Guinea Pigs; D051379:Mice; D009154:Mutation; D008003:Phthiraptera; D009956:Psittacosis; D012281:Rickettsia / Q000254:growth & development / Q000472:pathogenicity*; D012286:Rickettsia typhi / Q000254:growth & development / Q000472:pathogenicity; D013045:Species Specificity; D013696:Temperature; D014774:Virulence
chemical_list: D003470:Culture Media
vernacular_title: Beobachtungen an extrazellulären Rickettsien (Rickettsia mooseri und R. quintana) und Versuche zur Beeinflussung ihrer Eigenschaften.