Johnson, J W Plaque formation by strains of spotted fever rickettsiae in monolayer cultures of various cell types. [electronic resource] - Journal of clinical microbiology Apr 1978 - 389-91 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0095-1137 Standard No.: 10.1128/jcm.7.4.389-391.1978 doi Subjects--Topical Terms: Cell LineRickettsia--isolation & purificationRickettsia rickettsii--isolation & purificationViral Plaque Assay