There was no significant antiviral activity to he detected when the GLP was presented in the culture after beginning infection and before progeny virus release.

• 如果在病毒感染细胞后加入GLP，在病毒的生物大分子的合成完成后而子代病毒粒子还未释放出来前去掉GLP，这时GLP对病毒感染就没有抑制作用。