Plasmacytoid and myeloid DC precursors observed at the onset of GVHD and after starting treatment with steroids. (A) Absolute values obtained from 5 patients observed on the same day of GVHD onset are shown as ♦. Median values with interquartiles (error bars) of uncomplicated patients observed in the corresponding period are shown for comparison as □. (B) Median absolute values with interquartiles (error bars) were obtained from 5 patients observed both before (left side in each graph) and after (right side in each graph) starting GVHD treatment with steroids. Statistical analysis was obtained by paired Student t test. *P < .05 was considered significant. The P value for PDCs is .012.