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Attempted transmission of Ehrlichia canis by Rhipicephalus sanguineus after passage in cell culture.
1996
Mathew J.S. | Ewing S.A. | Barker R.W. | Fox J.C. | Dawson J.E. | Warner C.K. | Murphy G.L. | Kocan K.M.
Genetic and biological comparison of tick-borne encephalitis viruses from Hokkaido [Japan] and Far-Eastern Russia
2002
Goto, A. (Hokkaido Univ., Sapporo (Japan)) | Hayasaka, D. | Yoshii, K. | Mizutani, T. | Kariwa, H. | Takashima, I.
We compared the biological properties of Oshima 5-10 (tick-borne encephalitis [TBE] virus isolated in Hokkaido, Japan) and Sofjin-HO (Far-Eastern subtype TBE virus) including plaque formation, virus replication and virus protein synthesis in BHK-21 cell cultures to reveal strain differences. We also determined the complete nucleotide sequences of both strains and compared the deduced amino acid sequences. Plaques of Oshima 5-10 were smaller than those of Sofjin-HO. Virus titers in culture fluid of Oshima 5-10 were 1/100 of those of Sofjin-HO at 9 and 12 hr after infection. Less viral protein and RNA syntheses of strain Oshima 5-10 was observed than with Sofjin-HO. Genetic analysis revealed 1.4% of amino acids to differ with Sofjin-HO. No difference between the two strains was detected in the motif sequence of the viral enzyme, cleavage sites of viral protein or glycosylation sites of NS1.
Show more [+] Less [-]Ixodid tick infestations of wild birds and mammals on a game ranch in Central Province, Zambia
1998
Zieger, U. (Pretoria Univ. (South Africa). Centre for Wildlife Management) | Horak, I.G. | Cauldwell, A.E. | Uys, A.C.
Epidemiology of tick-borne diseases of cattle in Botshabelo and Thaba Nchu in the Free State Province [South Africa]
1998
Dreyer, K. | Fourie, L.J. | Kok, D.J. (Free State Univ., Bloemfontein (South Africa). Dept. of Zoology and Entomology)
Tick diversity, abundance and seasonal dynamics in a resource-poor urban environment in the Free State Province [South Africa]
1998
Dreyer, K. | Fourie, L.J. | Kok, D.J. (Free State Univ., Bloemfontein (South Africa). Dept. of Zoology and Entomology)
Spatial and temporal variations in the commencement of seasonal activity in the Karoo paralysis tick, Ixodes rubicundus
1996
Fourie, L.J. (Orange Free State Univ., Bloemfontein (South Africa). Dept. of Zoology and Entomology) | Horak, I.G. | Kok, D.J.
Immunization of rabbits with Amblyomma hebraeum nymphal homogenates and implications for the host amplification system
1998
Tembo, S.D. (Southern African Medical Univ., Medunsa (South Africa). Medical Microbiology Dept.)
The absence of clinical disease in cattle in communal grazing areas where farmers are changing from an intensive dipping programme to one of endemic stability to tick-borne diseases
1998
Tice, G.A. (Southern African Medical Univ., Medunsa (South Africa). Dept. of Production Animal Medicine) | Bryson, N.R. | Stewart, C.G. | Du Plessis, B. | De Waal, D.T.
Seasonal dynamics of the Karoo paralysis tick (Ixodes rubicundus): a comparative study on Merino and Dorper sheep
1996
Fourie, L.J. | Kok, D.J. (Orange Free State Univ., Bloemfontein (South Africa). Dept. of Zoology and Entomology)
