CD4 and focal segmental glomerulosclerosis: The results indicated that activated mast cells (p < 0.001) and naive CD4 T cells (p = 0.0019) in the FSGS group were remarkably lower than those in the control group, while gamma delta T cells (p = 0.0026) in the FSGS group were remarkably higher than those in the control group (Figure 11a,b).