Encyclopedia
Viruses
Viruses: A group of ultramicroscopic intracellular parasites consisting of nucleic acid surrounded by a protective protein or mixed shell composed of proteins, lipids, and carbohydrates
Source: "WATER AND WATER TREATMENT. TERMS AND DEFINITIONS. GOST 30813-2002"
(introduced by the Decree of the State Standard of Russia dated November 12, 2002 No. 409-st)