Moreover, 50 and 100 mg/kg baicalin increased the proportions of CD3+ T cells, CD3+CD4+ T cells and CD3+CD8+ T cells compared to those in the infection group; these effects were dose dependent (P < 0.05; Figure 4B, Additional file 2, panels B6, B7; Figure 5B, Additional file 3, panels B6, B7; Figure 6B, Additional file 4, panels B6, B7). The gene discussed is CD4; the disease is infection.