3.4.EX Lab diag (Gram neg bacilli) Flashcards
Cellular morphology:
Coccobacilli / Pleomorphic
Colony morphology:
Non hemolytic
Large gray black colonies in BBE
Bacteroides fragilis
Cellular morphology:
Tiny coccobacilli
Colony morphology:
Fluoresces brick red on blood agar
Black pigment in KVLB agar
Prevotella spp.
Cellular morphology:
Spindle-shaped with pointed ends
Colony morphology:
Colony types: Bread crumblike / Ground glass
Green colonies when exposed to air
Fluoresces chartreuse
Fusobacterium nucleatum
Vancomycin (Res)
Kanamycin (Res)
Colistin (Res)
Bile resistance (+)
Esculin hydrolysis (+)
Growth on KVLB (+)
Brick Red Fluorescence (-)
Chartreuse Fluorescence (-)
Iridescent sheen (-)
B. fragilis
Vancomycin (Res)
Kanamycin (Res)
Colistin (Sus / V)
Bile resistance (-)
Esculin hydrolysis (-)
Growth on KVLB (+)
Brick Red Fluorescence (+)
Chartreuse Fluorescence (-)
Iridescent sheen (-)
Prevotella spp.
Vancomycin (Res)
Kanamycin (Sus)
Colistin (Sus)
Bile resistance (-)
Esculin hydrolysis (-)
Growth on KVLB (-/+)
Brick Red Fluorescence (-)
Chartreuse Fluorescence (+)
Iridescent sheen (+)
Fusobacterium nucleatum
Vancomycin (Sus)
Kanamycin (Res)
Colistin (Res)
Bile resistance (-)
Esculin hydrolysis (-)
Growth on KVLB (-)
Brick Red Fluorescence (+)
Chartreuse Fluorescence (-)
Iridescent sheen (-)
Porphyromonas spp.