Figure 2
From: Long-term follow-up of Mycoplasma hyopneumoniae-specific immunity in vaccinated pigs
Monthly frequency (%) of CD3+ T cell subsets in blood of pigs. A CD4−CD8+ T cells; B CD4+CD8− T cells; C CD4−CD8− T cells; D CD4+CD8+ T cells. Figures on the left: farm A, Figures on the right: farm B. On each farm, pigs were vaccinated against M. hyopneumoniae at 16 days of age. *, P ≤ 0.05; **, P ≤ 0.01; ***, P ≤ 0.001 between the sampling moments.