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Daily body weight recordings after infection with escalating virus doses. In order to assess the pathogenicity of TK/VA (a), CAN/04 (b), and H7N2-PR8 (c), groups of mice were infected i.n. with six different dilutions of either virus and monitored daily for signs of mortality and morbidity during a period of 14 days. The data shown are from mice inoculated with the lowest, highest, and intermediate virus concentrations only and are expressed in log EID50.
