Figure 5From: Evaluation of local and systemic immune responses in pigs experimentally challenged with porcine reproductive and respiratory syndrome virusFrequency of NK cells in the PBMC of negative control and infected pigs. A The NKp46+ and B NKp46− NK cell frequency in the PBMC of control (NC) and infected pigs over a period of 35 days post-challenge was tested, and the correlation between viremia and C NKp46+ and D NKp46− NK cells was evaluated. An asterisk (*) over the bar indicates a significant difference (* indicates p ≤ 0.05, ** indicates p ≤ 0.01, *** indicates p ≤ 0.001 and **** indicates p ≤ 0.0001).Back to article page