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Figure 4 | Veterinary Research

Figure 4

From: Immunity raised by recent European subtype 1 PRRSV strains allows better replication of East European subtype 3 PRRSV strain Lena than that raised by an older strain

Figure 4

PRRSV-specific IPMA and VN antibody titers after challenge. The PRRSV Lena strain was used as an antigen in IPMA assay. VN antibody titers were tested against subtype 1 (07V063, 13V091 and 13V117, respectively) and against subtype 3 PRRSV (Lena) strains. Lines represent the mean titer in each group. Dashed line gives detection limit for the test. Letters (a: 13V091-immune group, b: 13V117-immune group, c: 07V063-immune group) represent statistically significant differences from the control (p < 0.05).

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