Absolute counts of pDCs and mDCs in 45 CVID patients and 12 controls. Medians of absolute counts of peripheral blood lymphoid dendritic cells (pDCs) (white boxes; □∘) and myeloid DCs (shaded boxes; Δ) in 12 control subjects (respective median values, 9,829/ml and 14,361/ml; extreme values, 7,514 to 22,769/ml and 8,941 to 22,204/ml) and 44 patients with common variable immunodeficiency (CVID) (respective median values, 3,647/ml and 11,100/ml; extreme values, 19 to 22,144/ml and 342 to 28,472/ml). The symbol within each box represents the median value. The upper and lower edges of the boxes represent the 25th and 75th percentiles, and the bars on the whiskers represent the 10th and 90th percentiles. s represents an aberrant value. Statistical comparisons between the two populations (nonparametric Mann–Whitney U test): P = 0.002 for pDCs and P = 0.1 for mDCs.