>It was stated in class that certain enveloped viruses obtain their
>envelope from the host cell wall. If so, then how does the initial virus
>get its envelope before it comes in contact with a host cell?
that would be from its previous host cell. presumably the first enveloped virus
evolved from a non-enveloped virus or other replication monster.
Brett Lindenbach
Program in Immunology
Washington University - St Louis
brett at borcim.wustl.edu