Foto de stock - An electron micrograph of the Norovirus, with 27_32nm_sized viral particles. Norwalk viruses and related caliciviruses are important causes of nonbacterial gastroenteritis in the United States. An estimated 181,000 cases of this type of food poisonin

Imagen: An electron micrograph of the Norovirus, with 27-32nm-sized viral particles. Norwalk viruses and related caliciviruses are important causes of nonbacterial.

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