The GFP+ CD4+ CD62Llow T cells increased significantly in both strains in response to infection, but despite the lack of eosinophils in ΔdblGATA-1 mice, we detected equal numbers of GFP+ CD4+ CD62Llow T cells per 106 MLN cells in 4get and ΔdblGATA-1 mice at both d14 and d20 post-T. This evidence concerns the gene CD4 and infection.