Research Article

A Longitudinal Study of NADC34-Like Strains in an Intensive Farm Unravels Divergent Evolution

Figure 5

Viremia and antibody levels of pigs during the challenge experiment. (a–c) Represent the antibody levels, viral load in serum samples, and nasal swabs for challenged piglets. (d–f) Represent the antibody levels, viral load in serum samples, and nasal swabs for sensitive piglets. Serum was tested using the IDEXX PRRS X3 ELISA kit, with positivity at an S/P value > 0.6 (; ; ).
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