title: Preparation of vaccines for Rocky Mountain spotted fever from rickettsiae propagated in cell culture.
mesh_terms: D000818:Animals; D001428:Bacterial Vaccines / Q000528:radiation effects; D002460:Cell Line; D002642:Chick Embryo; D004372:Ducks; D005557:Formaldehyde / Q000494:pharmacology; D006168:Guinea Pigs; D006801:Humans; D051379:Mice; D011830:Radiation Effects; D012284:Rickettsia rickettsii / Q000254:growth & development*; D012373:Rocky Mountain Spotted Fever / Q000517:prevention & control*; D014611:Vaccination
chemical_list: D001428:Bacterial Vaccines; D005557:Formaldehyde