3.4.EX Lab diag (Gram neg bacilli) Flashcards

1
Q

Cellular morphology:
Coccobacilli / Pleomorphic

Colony morphology:
Non hemolytic
Large gray black colonies in BBE

A

Bacteroides fragilis

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2
Q

Cellular morphology:
Tiny coccobacilli

Colony morphology:
Fluoresces brick red on blood agar
Black pigment in KVLB agar

A

Prevotella spp.

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3
Q

Cellular morphology:
Spindle-shaped with pointed ends

Colony morphology:
Colony types: Bread crumblike / Ground glass
Green colonies when exposed to air
Fluoresces chartreuse

A

Fusobacterium nucleatum

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4
Q

Vancomycin (Res)
Kanamycin (Res)
Colistin (Res)
Bile resistance (+)
Esculin hydrolysis (+)
Growth on KVLB (+)
Brick Red Fluorescence (-)
Chartreuse Fluorescence (-)
Iridescent sheen (-)

A

B. fragilis

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5
Q

Vancomycin (Res)
Kanamycin (Res)
Colistin (Sus / V)
Bile resistance (-)
Esculin hydrolysis (-)
Growth on KVLB (+)
Brick Red Fluorescence (+)
Chartreuse Fluorescence (-)
Iridescent sheen (-)

A

Prevotella spp.

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6
Q

Vancomycin (Res)
Kanamycin (Sus)
Colistin (Sus)
Bile resistance (-)
Esculin hydrolysis (-)
Growth on KVLB (-/+)
Brick Red Fluorescence (-)
Chartreuse Fluorescence (+)
Iridescent sheen (+)

A

Fusobacterium nucleatum

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7
Q

Vancomycin (Sus)
Kanamycin (Res)
Colistin (Res)
Bile resistance (-)
Esculin hydrolysis (-)
Growth on KVLB (-)
Brick Red Fluorescence (+)
Chartreuse Fluorescence (-)
Iridescent sheen (-)

A

Porphyromonas spp.

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