Fig. 2From: Immunity against a Japanese local strain of porcine reproductive and respiratory syndrome virus decreases viremia and symptoms of a highly pathogenic strainClinical scores (a), weight gain (b), and rectal temperatures (c) of the pigs following challenge with strain 10,186–614. Bars indicate the standard error (SE) of the mean. Statistically significant differences between Groups 2 and 3 are indicated (††P < 0.01, †0.01 < P < 0.05)Back to article page