External layers of Rickettsia prowazekii and Rickettsia rickettsii: occurrence of a slime layer.

Abstract

Using a simple specific-antibody stabilization procedure on organisms gently liberated from their host cells, we have demonstrated by electron microscopy that Rickettsia prowazekii and Rickettsia rickettsii possess a coat of variable thickness, external to the outer leaflet of the cell wall and the structure designated by others as a "microcapsule," which… (More)

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