Virus

Valérie Dayre,,

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DATE DE PUBLICATION 18/01/2007
AUTEUR Valérie Dayre,,
ISBN 9782882583833
DES PAGES: 71


Page précédente: Un bonheur insoupçonnable
Page suivante: Unité et diversité des Sud

12/18/ · Virus, an infectious agent of small size and simple composition that can multiply only in living cells of animals, plants, or bacteria. Viruses possess unique infective properties and thus often cause disease in host organisms. Learn about the history, types, and features of viruses. vi·rus (vī′rəs) n. pl. vi·rus·es 1. a. Any of various submicroscopic agents that infect living organisms, often causing disease, and that consist of a single or double strand of RNA or DNA surrounded by a protein coat. Unable to replicate without a host cell, viruses are typically not considered living organisms. b. A disease caused by a virus. 2. Download FREE AVG antivirus software. Get protection against viruses, malware and spyware. Easy-to-use virus scanner. Download today – free forever!

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