Viruses
The viruses in an attenuated vaccine

are usually larger than bacteria
continue to replicate
is altered with chemicals
have no genome

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Viruses
The sequence of nucleic acid in a variety of viruses and viral host, will find more similarities

between viruses and their hosts than among different viruses
among different viral hosts than among different viruses
among different viral hosts than between viruses and their hosts
among different viruses than between viruses and their hosts

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