Table 3. Comparison between labeling with SPION only or SPION+PLL during the following week.

		D1	D5	D7
PB%	SPION only (75 ug/mL)	99.5%	93.5%	78.5%
	SPION+PLL (25 ug/mL+PLL)	99.4%	94.5%	79.0%
ROS	SPION only	128.2%	123.5%	116.7%
	SPION+PLL	127.7%	146.7%*	118.4%
MTT	SPION only	98.5%	101.5%	98.8%
	SPION+PLL	91.9%	100.0%	98.8%

^†Numbers are expressed as the percentages of the labeled to the unlabeled cells examined simultaneously.