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  2. Gram-negative bacteria - Wikipedia

    en.wikipedia.org/wiki/Gram-negative_bacteria

    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 their cell envelope, which consists of a thin peptidoglycan cell wall sandwiched between an inner (cytoplasmic ...

  3. Haemophilus influenzae - Wikipedia

    en.wikipedia.org/wiki/Haemophilus_influenzae

    Haemophilus influenzae. Haemophilus influenzae (formerly called Pfeiffer's bacillus or Bacillus influenzae) is a Gram-negative, non-motile, coccobacillary, facultatively anaerobic, capnophilic pathogenic bacterium of the family Pasteurellaceae. The bacteria are mesophilic and grow best at temperatures between 35 and 37 °C.

  4. 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] Infections caused by MDR strains are ...

  5. Klebsiella - Wikipedia

    en.wikipedia.org/wiki/Klebsiella

    Klebsiella variicola. 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.

  6. Pseudomonas aeruginosa - Wikipedia

    en.wikipedia.org/wiki/Pseudomonas_aeruginosa

    Pseudomonas aeruginosa. Pseudomonas aeruginosa is a common encapsulated, Gram-negative, aerobic – facultatively anaerobic, rod-shaped bacterium that can cause disease in plants and animals, including humans. [1][2] A species of considerable medical importance, P. aeruginosa is a multidrug resistant pathogen recognized for its ubiquity, its ...

  7. Serratia marcescens - Wikipedia

    en.wikipedia.org/wiki/Serratia_marcescens

    Serratia marcescens (/ səˈreɪʃiə mɑːrˈsɛsɪnz /) [3][failed verification] is a species of rod-shaped, Gram-negative bacteria in the family Yersiniaceae. It is a facultative anaerobe and an opportunistic pathogen in humans. It was discovered in 1819 by Bartolomeo Bizio in Padua, Italy. [4] S. marcescens is commonly involved in hospital ...

  8. Proteus (bacterium) - Wikipedia

    en.wikipedia.org/wiki/Proteus_(bacterium)

    Proteus is a genus of Gram-negative bacteria. It is a rod shaped, aerobic and motile bacteria, which is able to migrate across surfaces due its “swarming” characteristic in temperatures between 20 and 37 °C. [1] Their size generally ranges from 0.4 to 0.8 μm in diameter and 1.0–3.0 μm in length. They tend to have an ammonia smell. [2]

  9. Gram stain - Wikipedia

    en.wikipedia.org/wiki/Gram_stain

    Gram staining is a bacteriological laboratory technique [7] used to differentiate bacterial species into two large groups (gram-positive and gram-negative) based on the physical properties of their cell walls. [8][page needed] Gram staining can also be used to diagnose a fungal infection. [1]