Table 1.

Apoptosis analysis using Annexin V staining

Treatment	Samples
	Jurkat	SBC-3	HeLa
HuIgG	9.90 ± 1.6	8.80 ± 2.8	17.4 ± 4.0
Anti-GM2	10.0 ± 1.9	7.50 ± 2.0	16.3 ± 3.8
Anti-GM2-sT15	10.3 ± 0.1	6.50 ± 0.2	18.3 ± 4.5
Anti-GM2-T15	41.3 ± 4.8a	25.0 ± 8.1a	25.7 ± 14.0
Staurosporine	99.0 ± 0.1a	77.7 ± 5.5a	54.2 ± 12.0a,b

Data were summarized from three sets of experiments, the percentage of Annexin V positive cells was presented. HuIgG, human IgG; staurosporine (1 nmol/l) was used as an inducer of apoptosis

^a P < 0.01 when compared with HuIgG group

^bHeLa cells were treated with actinomycin D (1 μg/ml)