Lab 7- Bacteroides, Dichelobacter, Provotella Flashcards

1
Q

Habitat

A

Alimentary tract, respiratory tract, genitalia, mucous membranes, water

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2
Q

Morphology

A

3-5 um rods + fimbria

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3
Q

Staining

A

Gram negative

Irregular

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4
Q

Culture

A

Fastidious!

Obligate anaerobic

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5
Q

Biochem

A

More active
Proteases (virulence factor )
, keratinase (foot root)

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6
Q

Pathogenicity

A

Facultative pathogenic

Necrosis, abscesses

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7
Q

Species

A

B. Fragilis

Mainly gut flora, appendicitis, wounds

D. Nodosus
Fimbria, proteolysis, keratinase
Sheep foot root

P. Melaninogenicus
Dog, cat
Putrid inflammations

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8
Q

Hemolysis

A

Yes

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