Table I.

Inhibitory effect of 13-methyl-palmatrubine on A549 implantation tumor growth in BALB/c-nu mice.

Groups	Surviving animals (n)	Body weight (g)		Tumor weight (g)	Inhibition rate (%)
		Start	End
Control	6	20.2±0.30	24.98±1.17	1.40±0.18
Treatment
3 mg/kg	6	20.88±0.36	24.58±1.22	0.91±0.23a	34.59
6 mg/kg	6	20.77±0.47	24.61±1.08	0.62±0.23c	55.78
9 mg/kg	6	20.58±0.58	23.90±1.40	0.38±0.16c	73.18

^aP<0.05 vs. the vehicle control;

^bP<0.01 vs. the vehicle control;

^cP<0.001 vs. the vehicle control. Treatment groups were administered 13-methyl-palmatrubine at different doses.