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Agricultural Research Council, Institute for Research on Animal Diseases, Compton, Nr. Newbury, Berks RG16 0NN
Repeated passage of the Chandler strain of scrapie in female golden hamsters using the intracerebral route of inoculation reduces the minimum incubation period to 60 days, about half of the minimum incubation period so far found in any of the mouse models of scrapie. The infectivity titres in brain in the clinical stage of the disease are considerably higher (> 8.0 -log10 LD50 i.c. units/0.05 g) than those found in mouse scrapie. The biological characteristics of this model of hamster scrapie are reported, including the effects on incubation period of route of inoculation, dose of agent, sex of hamster, ambient temperature (hibernation) and splenectomy. Some general and specific applications of this experimental model of scrapie are discussed.
Received 26 July 1976;
accepted 14 September 1976.
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