Last updated 5 years ago
REPLICATION CYCLE Influenza A virus shown in diagram. The virus is taken up by the cell as a result of receptor-mediated endocytosis. Once in the endosome, the envelop of the virus degrades ("uncoating") and the remaining proteins are released into the host cell. These proteins are viral DNA or RNA, which then undergo replication. Replication is often assisted by viral enzymes released from the endosome. Sneaky buggers, viruses.