Gram-negative facultative anaerobic rods
Gram-negative facultative anaerobic rods
Gram-negative facultative anaerobic rods
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Enterobacteriaceae: most important genera<br />
• Escherichia:<br />
- The most abundant <strong>facultative</strong> <strong>anaerobic</strong> member of the human<br />
gastrointestinal normal flora<br />
- Produces vitamin K<br />
- Some types are enteric pathogens<br />
• Klebsiella: ankylosing spondilitis (HLA-B27); Crohn disease?<br />
• Enterobacter<br />
• Proteus: rheumatoid arthritis (amino acid sequence homology<br />
between the urease of P. mirabilis and the joint cartilage<br />
collagen)<br />
• Citrobacter<br />
• Serratia
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