Fig. 2. Examples of the developed immunochromatographic strip test results. (A) A positive result for diluted porcine reproductive and respiratory syndrome virus (PRRSV)-positive serum from experimentally PRRSV-infected pigs. (B) A negative result for diluted PRRSV-negative control serum from a 3-month-old pig purchased from a PRRSV-negative farm. C, control line; T, test line.