In this experiment

each sample of serum was used after 30minutes of 56℃ inactivation to compare its medical effect before and after inactivation and to make sure of inactive influence on medical effect.Result:Relative inhibition effect of both normal serum and herbage-containing serum on cytopathy caused by virus reduced clearly after inactivation.Effect power of normal serum reduced about 50%

that of herbage-containing serum of single dosing reduced about 50% and twice dosing per day reduced about 35%

while its effective timing point that showed up before inactivation still existed.