Table 1. Tumor incidence and latency period in xenograft mice receiving cells pretreated with different drugs.

Group	Cells injected	Tumor incidence	Latency period(days)
Control	5000	6/6 (100.0%)	35
	1000	6/6 (100.0%)	57
	100	3/6 (50.0%)	56
Paclitaxel	5000	6/6 (100.0%)	48
	1000	5/6 (83.3%)	52
	100	2/6 (33.3%)	72
DSF	5000	7/7 (100.0%)	33
	1000	6/6 (100.0%)	54
	100	6/6 (100.0%)	62
DSF/Cu	5000	1/6 (16.7%)	88
	1000	0/7 (0.0%)	-
	100	0/6 (0.0%)	-