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10 points
VIRUSES is validvalid
VIRUS, any of a class of submicroscopic pathogens [n]
VIRUS, (Latin) a pathogenic agent, usually a protein-coated particle of RNA or DNA, capable of increasing rapidly inside a living cell [n]
VIRUS, any of a class of submicroscopic pathogens [n]
VIRUS, (Latin) a pathogenic agent, usually a protein-coated particle of RNA or DNA, capable of increasing rapidly inside a living cell [n]