Fig. 4
Changes of total and differential leukocyte counts in the peripheral blood of the infected piglets. (1) Total white blood cells (WBC); (2) monocytes; (3) lymphocytes. The values represent the mean of the absolute numbers (n = 6 in each group); error bars show standard deviations. Data with different letters (a-c) indicate significant differences between groups (p < 0.05)