Viruses From Animal and Plants
The penetration of animal viruses into attached cells occur by mechanisms consisting of engulfment of whole virions by the cells in a phagocytic process called

viropexis
vitropexis
vivopexis
ectodesmata

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Viruses From Animal and Plants
Negative strand ssRNA viruses need to have a preformed replicase when they invade a mammalian cell because they

use it to terminate transcripts when they copy host cell mRNA
use it to modify host enzymes that are recruited for viral replication
None of these
have to make a positive strand copy that can be translated

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