Apoptosis in subpopulations of normal and MDS marrow cells.

Shown is the extent of apoptosis before (left column) and after TRAIL exposure (right column) obtained with 10 normal and 14 MDS marrow and exposure for 6-12 hours at 300 ng TRAIL/mL. Shown are mean values; standard deviations ranged from ± 4% to ± 7% in normal, and ± 6% to ± 15% for MDS marrow.