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Gram Stain - Coggle Diagram

- - - - That's bordetella parapertussis
        
        But you can confirm using urease
        
        It also should be cat positive, indole neg, nitrate neg
    - - But cat neg, bleach smell, pitting agar?
        
        That is eikenella, confirm with nitrate or a carb utilization
        
        Asach but nitrate positive
      - either pasteurella or bordetella pertussis
        
        Remember that B. pertussis is weakly cat positive and pasteurella is weakly ox positive
        
        You can confirm which one using indole and/or nitrate
        
        Positive for both
        
        Pasteurella
        
        Negative for both
        
        Bordetella pertussis
- - - - That's Moraxella catarrhalis
        
        Check CTA carbs if you want, all negative for fermentation, which means it stays red, does not go yellow
    - - Check glucose and maltose
        
        Gono will only ferment glucose
        
        Meningitidis will ferment glucose and maltose
- - - - B. cereus, and I mean you can tell
        
        You can do motility or penicillin next. It will be penicillin resistant or positive for motility
        
        Positive catalase
    - - That's corynebacterium
        
        you can do catalase to separate from arcanobacterium haemolyticum if you want, will be positive
        
        Smoking gun is bile esculin test, which is what separates it from listeria, it is bile esculin negative
    - - You've either got listeria monocytogenes or arcanobacterium haemolyticum
        
        Check the same two tests that you would do for corynebacterium, which are catalase and bile esculin
        
        Listeria is a hardy bitch so it will be positive for both
        
        arcanobacterium haemolyticum is a wimp so it will be negative for both