Table 1.

Antiviral activity of SJS against different influenza virus strain

Viral strains	IC50a (μg/ml)	SIb (>)
A/PR/8/34 (H1N1)	198.47	10.08
A/WSN/33 (H1N1)	34.66	57.70
A/GZ/GIRD07/09 (H1N1)	78.56	25.46
A/China/24/96 (H7N3)	371.13	5.39
A/HK/Y280/97 (H9N2)	353.55	5.66
A/Aichi/2/1968 (H3N2)	360.73	5.54
B/Lee/1940 (Flu B)	750.79	2.66

^aMean of the results from three independent experiments

^bThe SI (selectivity index) was calculated as the ratio of TC₅₀ to IC₅₀