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Table 1 The clinical sign scores of the pigs after challenge and their lung lesions recorded at 15 d.p.i. a

From: Comparative expression of Toll-like receptors and inflammatory cytokines in pigs infected with different virulent porcine reproductive and respiratory syndrome virus isolates

Groups Clinical signs scores (± SD)b Lung lesions scores (± SD)c
HP 10.4 ±1.22A 57.5 ± 5.34A
LP 7.2 ±0.92A 45.2 ± 9.23A
LP-der 1.8 ±0.35B 5.3 ± 4.82B
Control 0 0
  1. aWithin each column, values followed by different letters (A, B) are significantly different (p < 0.05).
  2. bClinical sign scores are the sum of daily observations of behavior, respiration, and cough according to the severity of the illness.
  3. cEvaluation of the percentage of the entire lung affected by pneumonia.