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  2. Gram-negative bacteria - Wikipedia

    en.wikipedia.org/wiki/Gram-negative_bacteria

    Gram-negative bacteria are bacteria that, unlike gram-positive bacteria, do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. [1] Their defining characteristic is that their cell envelope consists of a thin peptidoglycan cell wall sandwiched between an inner ( cytoplasmic ) membrane and an outer ...

  3. Enterobacteriaceae - Wikipedia

    en.wikipedia.org/wiki/Enterobacteriaceae

    Enterobacteriaceae is a large family of Gram-negative bacteria.It includes over 30 genera and more than 100 species. Its classification above the level of family is still a subject of debate, but one classification places it in the order Enterobacterales of the class Gammaproteobacteria in the phylum Pseudomonadota.

  4. Bacteroides - Wikipedia

    en.wikipedia.org/wiki/Bacteroides

    Bacteroides is a genus of Gram-negative, obligate anaerobic bacteria. Bacteroides species are non endospore–forming bacilli, and may be either motile or nonmotile, depending on the species. [3] The DNA base composition is 40–48% GC. Unusual in bacterial organisms, Bacteroides membranes contain sphingolipids.

  5. Category:Gram-negative bacteria - Wikipedia

    en.wikipedia.org/.../Category:Gram-negative_bacteria

    Pages in category "Gram-negative bacteria" The following 200 pages are in this category, out of approximately 222 total. This list may not reflect recent changes.

  6. Gram stain - Wikipedia

    en.wikipedia.org/wiki/Gram_stain

    A Gram stain of mixed Staphylococcus aureus (S. aureus ATCC 25923, gram-positive cocci, in purple) and Escherichia coli (E. coli ATCC 11775, gram-negative bacilli, in red), the most common Gram stain reference bacteria. Gram stain (Gram staining or Gram's method), is a method of staining used to classify bacterial species into two large groups ...

  7. Multidrug-resistant Gram-negative bacteria - Wikipedia

    en.wikipedia.org/wiki/Multidrug-resistant_gram...

    Multidrug resistant Gram-negative bacteria (MDRGN bacteria) are a type of Gram-negative bacteria with resistance to multiple antibiotics. They can cause bacteria infections that pose a serious and rapidly emerging threat for hospitalized patients and especially patients in intensive care units . [ 1 ]

  8. Bacteria - Wikipedia

    en.wikipedia.org/wiki/Bacteria

    By combining morphology and Gram-staining, most bacteria can be classified as belonging to one of four groups (Gram-positive cocci, Gram-positive bacilli, Gram-negative cocci and Gram-negative bacilli). Some organisms are best identified by stains other than the Gram stain, particularly mycobacteria or Nocardia, which show acid fastness on ...

  9. Klebsiella - Wikipedia

    en.wikipedia.org/wiki/Klebsiella

    Klebsiella is a genus of Gram-negative, oxidase-negative, rod-shaped bacteria with a prominent polysaccharide-based capsule. [3] Klebsiella is named after German-Swiss microbiologist Edwin Klebs (1834–1913). Carl Friedlander described Klebsiella bacillus which is why it was termed Friedlander bacillus for many years.