(A) Scatter plot of the distribution of DC numbers in 103 normal individuals, expressed as percentage of blood MNC and as absolute counts. (B) DC numbers appear to follow a normal distribution. The mean DC proportion (0.42% of MNC) and the calculated normal range (0.15% to 0.70% of MNC) are shown (solid and dashed lines, respectively). Absolute DC counts follow a similar distribution (not shown).