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10 Cards in this Set
- Front
- Back
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Adoption
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in microbiology, the establishment and further
spreading of a pathogen within a new host population |
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Antigenic drift
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small changes in the viral coat (surface pro-teins) that happen over time. Antigenic drift can produce a new influenza viral strain that may not be recognized by the body's immune system
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Antigenic shift |
a process involving at least two different strains of viruses, or even different viruses, combining to form a new virus that may then infect different species
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Emerging infectious diseases
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diseases that are newly identified in the population, or have existed but have changed
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Reemerging infectious diseases
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older diseases thought to be under control but that are reemerging.
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Urbanization
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a process by which large numbers of people become concentrated in smaller areas, forming cities
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Thermal death point (TDP)
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the lowest temperature required to kill a population of microorganisms in liquid suspension in 10 minutes
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Thermal death time (TDT)
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the shortest time required to kill
a population of microorganisms at a specific temperature. |
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Tyndallization
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Heat sterilization by steaming the food or medium for a few minutes at atmospheric pressure on three or four successive occasions, separated by 12- to 18-hour intervals of incubation at a temperature favorable for bacterial growth.
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Lypholization
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is a method of removing all moisture from a material by sublimation. The frozen specimen is placed in a vessel and a vacuum is created within that vessel causing the ice to undergo a phase transition from a solid to a gas with no liquid phase. It is usually used to preserve biological materials containing proteins. Lypholization prevents the hydrolysis of peptide bonds in proteins.
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