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Rectal temperatures and mortality rates of piglets inoculated with JL580. (A) Rectal temperatures of piglets inoculated with JL580 F0 (homogenate supernatant) or JL580 F2 (second passage of JL580 in Marc-145 cells). Mean temperatures ± standard deviations (error bars) are shown (groups A and B, n = 5; group C, n = 4). A rectal temperature of >40.5°C was defined as fever. (B) Mortality rates of piglets infected with JL580 F0 or F2.
