Virus Internalization

**Definition:** The entering of cells by viruses following VIRUS ATTACHMENT. This is achieved by ENDOCYTOSIS, by translocation of the whole virus across the cell membrane, by direct MEMBRANE FUSION of the viral membrane with the CELL MEMBRANE, or by fusion of the membrane of infected cells with the membrane of non-infected cells causing SYNCYTIA to be formed.

**Tree numbers:** - G06.920.881

**Synonyms:** - Virus Entry - Viral Internalization - Viral Entry