Canadian Medical Guide > Biological Sciences > Biological Phenomena, Cell Phenomena, and Immunity > Biological Phenomena > Microbiologic Phenomena > Viral Physiology Terms and Definitions

Viral Physiology

Medical Definition:	Biological processes and activities of viruses.
Guide Notes:	GEN or unspecified; prefer specifics; DF: VIRAL PHYSIOL
Previously Indexed:	Viruses/physiology (1966-1997)

Viral Physiology Categories.

	Antibody-Dependent Enhancement - Enhancement of viral infectivity caused by non-neutralizing antibodies. There are at least two mechanisms known to account for this: mediation by Fc receptors (RECEPTORS, FC) or by complement receptors (RECEPTORS, COMPLEMENT). Either the virus is complexed with antiviral IMMUNOGLOBULIN G and binds to Fc receptors, or virus is coated with antiviral IMMUNOGLOBULIN M and binds to complement receptors.
	Hemagglutination, Viral - Agglutination of erythrocytes by a virus.
	Viral Interference - A phenomenon in which infection by a first virus results in resistance of cells or tissues to infection by a second, unrelated virus.
	Virus Integration - Insertion of viral DNA into host-cell DNA. This includes integration of phage DNA into bacterial DNA (LYSOGENY) to form a PROPHAGE or integration of retroviral DNA into cellular DNA to form a PROVIRUS.
	Virus Latency - The ability of a pathogenic virus to lie dormant within a cell (latent infection). In eukaryotes, subsequent activation and viral replication is thought to be caused by extracellular stimulation of cellular transcription factors. Latency in bacteriophage is maintained by the expression of virally encoded repressors.
	Virus Replication - The process of intracellular viral multiplication, consisting of the synthesis of PROTEINS; NUCLEIC ACIDS; and sometimes LIPIDS, and their assembly into a new infectious particle.
	Virus Shedding - The expelling of virus particles from the body. Important routes include the respiratory tract, genital tract, and intestinal tract. Virus shedding is an important means of vertical transmission (DISEASE TRANSMISSION, VERTICAL).

Viral Physiology Medical Definitions and Terms

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