Table 1.

Fas Ligand–Induced Injury of Human OLs

		Target cell
		OLs				U251 glioma
Effector		Trypan blue uptake		PI nuclear stain		Trypan blue uptake		PI nuclear stain
FasL		56 ± 2%		3 ± 1%		78 ± 9%		69 ± 8%
Yeast  supernatant		4 ± 1%		1 ± 0.4%		5 ± 1%		1 ± 1%
Culture  medium		1 ± 0.2%		2 ± 1%		2 ± 0.4%		2 ± 1%

Data indicate the percentage ± SEM of triplicate experiments of unfixed OLs or glioma cells, which take up trypan blue or shown nuclear condensation or fragmentation after fixation and staining with PI in response to a 24-h exposure to fasL (1:10 dilution). Controls were either yeast medium used to prepare the fasL or culture medium alone.