Escherichia coli (/ ˌ ɛ ʃ ə ˈ r ɪ k i ə ˈ k oʊ l aɪ / ESH-ə-RIK-ee-ə KOH-lye) [1] [2] is a gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms.

2023年7月13日 · E. coli is the most common gram-negative bacteria in the human gastrointestinal tract and lacks virulence in this setting. However, when found outside of the intestinal tract, E. coli can cause urinary tract infections (UTI), pneumonia, bacteremia, and peritonitis, among others.

Escherichia coli (E. coli) are a group of gram-negative bacteria that normally reside in the intestine of healthy people, but some strains can cause infection in the digestive tract, urinary tract, or many other parts of the body.

2024年5月14日 · Escherichia coli are gram-negative bacteria that live in the gastrointestinal tract. Most strains do not cause illness. Pathogenic E. coli are categorized into pathotypes based on their virulence genes. The six pathotypes of diarrheagenic E. coli are:

2023年7月18日 · The gram-negative bacterium Escherichia coli is the most numerous aerobic commensal inhabitant of the large intestine. Certain strains cause diarrhea, and all can cause infection when they invade sterile sites, leading to active infection.

Escherichia coli is a Gram-negative, facultatively anaerobic, chemo-organotrophic, non–spore-forming, rod-shaped bacterium and is a member of the family Enterobacteriaceae. E. coli is a commensal organism making up part of the normal flora of the human and animal intestinal tracts.

2023年8月1日 · Staining: In the Gram stain, E. coli is classified as a gram-negative bacterium. It appears pink or red after staining, indicating that it does not retain the crystal violet stain and takes up the counterstain (safranin). Motility: Most strains of E. coli are motile due to the presence of peritrichous flagella.

2024年9月8日 · Aerobic, Gram-negative (GN) rod, E. coli is a member of Enterobacteriaceae: human strains may be: (1) commensal bowel flora; (2) intestinal pathogenic (enteric/diarrheagenic); (3) extra-intestinal pathogenic.

E. coli is Gram-negative straight rod, 1-3 µ x 0.4-0.7 µ, arranged singly or in pairs (Fig. 28.1). It is motile by peritrichous flagellae, though some strains are non-motile. Spores are not formed.

2024年3月27日 · Escherichia coli also termed E. coli, which is a Gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus Escherichia. It is usually found in the lower intestine of warm-blooded organisms (endotherms).