Abstract: Embodiments of the present disclosure provides a method and an apparatus for subscribing a notification of a change of a network function. A method for subscribing to notification of a change of a network function may comprise: transmitting (S101) a subscription message to a monitoring network function; and receiving (S102) a notification from the monitoring network function to notify a change from the network function whose status is required to be monitored. The subscription message indicates of the network function. The attribute comprises a serving scope indicating one or more target served area of the network function whose status is required to be monitored. According to embodiments of the present disclosure, a simple and fast implementation for subscribing notification of change of network function may be achieved. Particularly, both the response time and the accuracy of the notification about a change of a subscribed network function may be improved.

Abstract: A process of using Isatis root polysaccharide in the manufacture of medicaments for treating and/or preventing diseases induced by influenza virus and complications thereof, wherein the molecular weight of the Isatis root polysaccharide is 3000-7000 Da, and the influenza viruses include influenza virus A, influenza virus B, avian influenza virus, such as human influenza virus H1N1, H3N2, avian influenza virus H6N2, H7N3, H9N2 and INF B. The mechanism of the Isatis root polysaccharide against influenza virus is due to the ability to inhibit the attachment of influenza virus to the host cell. The present invention also discloses a pharmaceutical composition containing the above-mentioned Isatis root polysaccharides and a method for preparing the polysaccharides.