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11 Cards in this Set

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what are ligands also called on bacteria?

adhesins

what are ligands also called on viruses?

attachment proteins

what is avirulent?

Bacterial cells and viruses that have lost the ability to make ligands-whether as the result of some genetic change (mutation) or exposure to certain physical or chemical agents become harmless.

describe biofilm

some bacterial pathogens do not attach to host cells directly but instead interact with each other to form a sticky web of bacteria and polysaccharides which adhere to a surface within a host.

define disease

aka morbidity, is a condition sufficiently adverse to interfere with normal functioning of the body.

define symptoms

subjective characteristics of a disease that can be felt by the patient alone. i.e. pain, headache, dizziness and fatigue

what are signs?

objective manifestation of disease that can be observed or measured by other. i.e. swelling, rash, redness and fever.

what is a syndrome?

is a group of symptoms and signs that collectively characterizes a particular abnormal condition.

what is asymptomatic?

having an infection but showing no symptoms, aka subclinical

what is etiology

is the study of the cause of a disease

what is the germ theory of disease?

states that disease is caused by infections of pathogenic microorganisms