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Figure 4 | Veterinary Research

Figure 4

From: Different clinical, virological, serological and tissue tropism outcomes of two new and one old Belgian type 1 subtype 1 porcine reproductive and respiratory virus (PRRSV) isolates

Figure 4

Virus titers in nasal secretions of pigs inoculated with PRRSV 13V091, 13V117 and 07V063. Lines represent the mean value in each group. Whiskers denote the standard deviation (SD). The dotted line gives the detection limit for virus titration. Letters denote significant statistical differences (P < 0.05) between viral strains (a: 13V091 and 13V117, b: 13V091 and 07V063, c: 13V117 and 07V063).

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