Table 1.

Cell integrity and viability

Sample	LDH	Trypan blue
Activity [units/ml]		Vitality [%]
Medium	1
1% O2 1 hr	<1	91
1% O2 24 hrs	<1	91
21% O2 1 hr	1	94
21% O2 24 hrs	<1	92
1% O2+ echinomycin 8 hrs	2	n.d.