Lab Diagnosis Flashcards
All enterobacteriaceae are oxidase?
- negative
Endopigment
- restricted to the colonies
- > golden yellow or white
If blood agar hemolysis is dark/green what is it?
- partial hemolysis
- > alpha
Used to differentiate between Staphylococcus (+) and Streptococcus (-)
- Catalase Test
- > bubbles
If MacConkey growth was colorless it is a?
- non-lactose fermenter
If MacConkey growth was pink it is a?
- lactose fermenter
Exopigment
- the color diffuses in the surroundijng medium
- > green
The lowest concentration (highest dilution) of drug at which there is no bacterial growth
- MIC determination
Organisms which contain cytochrome c as part of their respiratory chain are oxidase ____ and turn the reagent _____
- positive
- blue/purple
If blood agar hemolysis is yellow what is it?
- complete hemolysis
- > beta
Selective medium that only gram negative grows in
- MacConkey Agar
Non-selective medium that all bacteria grow in
- blood agar
Bacterial specimen should be held at what degree celsius?
- 4’C
- bacteria remain viable, but do not multiply
Used to differentiate enterobacteriaceae from Pseudomonas (+)
- oxidase test
Delayed Hypersensitivity
- used to test if the animal is already sensitive to a bacterium by injecting small amounts and measuring the site for inflammation
- Used for glanders and Tuberculin
