Abstract
The agar double-diffusion precipitation test was applied successfully in the demonstration of ASF viral antigen in spleen and liver from swine experimentally infected by the oral route.
Positive reactions were obtained with tissues collected as early as 24 hours after the onset of pyrexia and before other clinical manifestation of the disease. Cross-reactions were observed between the various ASF strains used in the study, making the test practical for routine diagnosis in which different strains may be encountered.
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