Table 1. Dose dependent endothelial cell apoptosis.

Treatment	Concentration	Time [min]	APC positive/PI negative cells [%]
Non-treated control			3.15±0.64*
MB	10 µM	30	5.48±1.91*
		120	6.42±2.18*
	30 µM	30	9.60±2.99
		120	19.10±5.00
	60 µM	30	23.80±4.80
		120	52.05±9.85 *

The number of apoptotic human microvascular endothelial cells significantly increases in a dose dependent manner (120 min 60 µM vs. control, 30 min 10 µM and 120 min 10 µM) but remains stable regarding the incubation time (* p<0.05, data represent mean±SEM).