Results 141 to 150 of about 3,644 (172)

Plaque Assay for Rickettsia rickettsii

Journal of Bacteriology, 1969
A plaque technique for the assay of Rickettsia rickettsii is described. The method employs primary chick or green monkey kidney monolayer cell cultures with either an agarose or special Noble agar overlay. Plaques were counted in 6 days and resultant titers correlated well with ld 50
E H, Weinberg, J R, Stakebake, P J, Gerone   +2 more
openaire   +2 more sources

Rickettsia rickettsii and Rickettsia montana from Ixodid Ticks in Connecticut

The American Journal of Tropical Medicine and Hygiene, 1986
Dermacentor variabilis, infected with spotted fever group rickettsiae, parasitized 8 of 70 raccoons captured in Newtown, Connecticut. The spotted fever agent, Rickettsia rickettsii, was isolated and identified from 4 adult D. variabilis and from 1 nymphal Ixodes texanus removed from raccoons.
J F, Anderson, L A, Magnarelli, R N, Philip, W, Burgdorfer   +3 more
openaire   +2 more sources

Vectorial competence of A mblyomma tonelliae to transmit R ickettsia rickettsii

Medical and Veterinary Entomology, 2016
Fil: Nava, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe.
Marcelo B Labruna
exaly   +4 more sources

Platelet Aggregation in Dogs Experimentally Infected with Rickettsia rickettsii

Veterinary Clinical Pathology, 1990
SummaryPlatelet aggregation studies were performed on nine Beagle dogs experimentally infected with Rickettsia rickettsii. Platelets from dogs with Rocky Mountain spotted fever tended to be more aggregable than controls.
C. B., Grindem, W. T., Corbett, M. G., Levy, M. G., Davidson, E. B., Breitschwerdt   +4 more
openaire   +2 more sources

A PLAQUE PROCEDURE FOR THE ASSAY OF RICKETTSIA RICKETTSII

1968
Abstract : A plaque technique for the assay of Rickettsia rickettsii is described. The method employs primary chick fibroblast cell cultures with a semisolid agar overlay. Plaques were observed after 6 days' incubation, and the titers correlated well with those obtained in embryonated eggs infected by the yolk-sac route.
Peter J. Gerone, Jack R. Stakebake, Edmund H. Weinberg   +2 more
openaire   +1 more source

Natural infection of dogs on Cape Cod with Rickettsia rickettsii

Journal of Clinical Microbiology, 1979
Four isolates of rickettsiae from sick dogs on Cape Cod, Mass., were serologically identical to isolates of Rickettsia rickettsii from human patients with Rocky Mountain spotted fever. The antigenic analysis used the indirect fluorescent-antibody test and antisera prepared in mice to each of the isolates and to reference strains of R.
W C, Feng, E S, Murray, G E, Rosenberg, J M, Spielman, J L, Waner   +4 more
openaire   +2 more sources

THORACIC RADIOGRAPHIC FINDINGS IN DOGS INFECTED WITH RICKETTSIA RICKETTSII

Veterinary Radiology & Ultrasound, 1997
Sixteen beagle dogs were injected intradermally withRickettsia rickettsii.The dogs were divided into four groups (n=4):1) infected, non‐treated withdoxycycline;3) infected, treated with doxycycline and an anti‐inflammatory dose of corticosteroid;4) infected, treated with ocular fluoresein angiograhphy was performed on days 6, 10, 17 post‐inoculatin.A ...
W T, Drost, C R, Berry, E B, Breitschwerdt, M G, Davidson   +3 more
openaire   +2 more sources

Infection of Human Vascular Endothelial Cells by Rickettsia rickettsii

Journal of Infectious Diseases, 1984
Rocky Mountain spotted fever is caused by Rickettsia rickettsii, an obligate intracellular bacterial parasite. The organism primarily attacks endothelial cells and occasionally attacks smooth-muscle cells of small blood vessels. An effective means of examining host-parasite interaction in Rocky Mountain spotted fever would be to use an in vitro model ...
D J, Silverman, S B, Bond
openaire   +2 more sources

Natural History of Rickettsia Rickettsii

Annual Review of Microbiology, 1986
J E, McDade, V F, Newhouse
openaire   +3 more sources

Actions of Antibiotics on Rickettsia rickettsii

Journal of Infectious Diseases, 1986
C L, Wisseman, S V, Ordonez
openaire   +2 more sources