CD19 and common variable immunodeficiency: The mean values and percentages of this receptor’s occurrence on individual subpopulations of immune cells tested in patients with CVID were: 6.84-fold for CD4+TLR4+, 6.53-fold for CD8+TLR4+, and 6.22-fold for CD19+TLR4+, while in patients with CLL they were 4.43-fold, 4.20-fold, and 5.30-fold the values observed in healthy volunteers, respectively (Figure 6) (Table 3).