BMS blockbuster PD-1 therapy shows excellent clinical phase 3 results

Virus is a kind of submicroscopic particle that can be replicated by host cell system without complete cell structure. The virus does not have a cellular structure and cannot grow and replicate independently, but it can infect all living organisms with cells and has the characteristics of heredity and replication.

Hepatitis B vaccine is a special drug used to prevent hepatitis B. After vaccination, it can stimulate the immune system to produce protective antibodies, which exist in human body fluids. Once the hepatitis B virus appears, the antibody will act immediately to remove it, prevent infection, and will not harm the liver, so that the human body has the immunity to prevent hepatitis B, so as to achieve the purpose of preventing hepatitis B infection.