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Figure 4 | Veterinary Research

Figure 4

From: Vaccination of sows against type 2 Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) before artificial insemination protects against type 2 PRRSV challenge but does not protect against type 1 PRRSV challenge in late gestation

Figure 4

In situ hybridization for the detection of PRRSV nucleic acid in the thymuses of the litters. The results are the sows that received PRRSV vaccine followed by type 1 PRRSV challenge (group 1, A); sows that received PRRSV vaccine followed by type 2 PRRSV challenge (group 2, B); sows challenged with type 1 PRRSV (group 3, C); sows challenged with type 2 PRRSV (group 4, D).

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