Gram-negative bacteria: Difference between revisions
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*[[Pasteurella]] |
*[[Pasteurella]] |
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*[[Brucella]] |
*[[Brucella]] |
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*[[ |
*[[Bordetella pertussis]] |
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*[[Francisella tularensis]] |
*[[Francisella tularensis]] |
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*[[Legionella]] |
*[[Legionella]] |
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Latest revision as of 18:46, 17 February 2022
- Bacteria that have a thin peptidoglycan layer in the cell wall and therefore stain pink or red on Gram stain
- Outer membrane contains lipopolysaccharide (LPS, which consists of lipid A, core polysaccharide, and O antigen)
Organisms
Bacilli
| Lactose | Oxidase | Urease | ||
|---|---|---|---|---|
| fermenter | fast | Escherichia coli, Klebsiella, Enterobacter | ||
| slow | Citrobacter, Serratia | |||
| non-fermenter | positive | Pseudomonas, Burkholderia | ||
| negative | positive | Helicobacter pylori, Proteus mirabilis | ||
| negative | negative | Campylobacter, Shigella, Salmonella, Yersinia | ||
Cocci
Coccobacilli
- Haemophilus (S. aureus satellite colonies)
- Pasteurella
- Brucella
- Bordetella pertussis
- Francisella tularensis
- Legionella
