BACTE - Bite & Scratch, Motility, Hemolytic Activity

G(+): Staphylococcus intermedius, Arcanobacterium

dog bites

G(-): Capnocytophaga, Bordetella brochiseptica

dog bites

Pasteurella multocida

cat bite

Bartonella hensellae, Afipia felis, Pasteurella multocida

cat scratch

Streptobacillus moniliformis, Spirillum minus (Sodoku)

rat bite

Eikenella corrodens

human bite

Pseudomonas aeruginosa

Triple motility: swimming, swarming, twitching

Spirochetes

corkscrew

Campylobacter

darting

Capnocytophaga

M. pneumoniae

gliding

Vibrio

rapid darting / shooting star

Leptospira

spinning

Listeria

tumbling

Kingella and Bartonella

twitching

Brownian movement

not a true bacterial motility

alpha

incomplete or partial hemolysis; green or brown color surrounding the colony

beta

complete hemolysis of RBC; clearing or colorless zone around colony

gamma

lack of hemolysis; no apparent change in color surrounding the colony

alpha prime

a small zone of alpha hemolysis surrounds the colony. a small zone of B-hemolysis surround the zone of alpha hemolysis

C. perfringens

double zone of hemolysis with inner beta and outer alpha

transmitted light

light used to read hemolytic patterns

behind

transmitted light where the light is coming from

methemoglobin > biliverdin > bile pigments

pigments responsible for alpha hemolysis