Summary

The Vietnamese cobra venom (N.naja) was separated into seven fractions by column chromatography on Sephacryl S-100. These fractions had different anti-bacterium, anti-fungus and toxic activities, but they were not toxic on three cancer cell lines. The most toxic fraction had molecular mass in range of 6-7 kDa, that similar to neurotoxins isolated from venom of Taiwan cobra. The content of the toxic fractions depend on their collecting time, it was rich in the hibemant time of snake. 

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