micro exam #3
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the change in immunoglobulin isotype (or class) secretion that results during B-cell and then plasma cell differentation
an antibody to a microbial toxin, usually a bacterial exotoxin, that combines specifically with the toxin, in vivo and invitro, neutralizing the toxin.
an enzyme that degrades peptidoglycan by hydrolyzing the (1-4) bond that joins N-acetylmuramic acid and N-acetylglucosamine.
a gene whose activity is associated with the conversion of normal cells to cancer cells.
a complete virus particle that represents the extracellular phase of the virus life cycle. At the simplest it consits of a protien capsid surrounding a single nucleic acid molecule.
the nucleic acid and its surrounding protein coat or capsid. the basic unit of virion structure.
- the observable change that occurs in cells as a result of viral replication.
- example include ballooning, binding together, clustering or even death of the cultured cells.
a tissue graft between animals of different species.
a positive but not obligatory interaction between two different organism
any virus, bacteria, or other agent that causes disease
an object that is not in itself harmful, but is able to harbor and transmit pathogenic organisms.
a microorganism that is usually free living or a part of the host normal microbiota, but which may become pathogenic under certain circumstances such as when the immune system is compromised.
the recall, or the remembering by the immune system of a prior response to a given antigen.
a type of symbiosis in which one organism benefits from the other and the host is usually harmed.
Virus infection in which the virus stops reproducing and remains dormant for a period before becoming active again.
Virus infection with a fairly rapid onset that last for a relatively short time. Short but severe.
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