Table II.

Antitumor effect of As₄S₄ in vivo.

Group	Injection dosage (mg/kg) × ± standard deviation	Tumor weight (g)	Tumor inhibition (%)
Negative control	0	2.42±0.73	0
Positive control (cyclophosphamide)	20	0.59±0.16b	75.62
High As4S4	60	1.26±0.54a	47.93
Low As4S4	30	1.78±0.55	26.45

C57BL/6 mice were inoculated with Lewis lung carcinoma cells (10⁶ cells/mouse), injected intraperitoneally with As₄S₄ for eight days and subsequently sacrificed. Data are expressed as the mean ± standard deviation.

^aP<0.01;

^bP<0.001 vs. negative control.

As₄S₄, arsenic sulfide.