Figure 1. Lymphocyte (a) and neutrophil (b) peripheral blood
concentrations for different weaning ages: 14 d (n = 8 pigs; ●), 21 d (n
= 7 pigs; ∆), and 28 d (n = 8 pigs; □). Day relative to birth. Blood
samples were collected from all pigs on each day. Values are least
squares means ± SEM. Within day, differences among treatments are
designated: *P < 0.1; **P < 0.05