cinia virus replication by preventing viral entry into host cells. However, AgNPs cannot prevent the virus from adsorbing onto the cells, and this virus is still infectious, indicating that AgNPs lack a direct virus-killing effect.13
Figure 2  Potential antiviral mechanism of AgNPs. (1) AgNPs interact with viral envelope and/or viral surface proteins; (2) AgNPs interact with cell membranes and block viral penetration; (3) AgNPs block