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  1. a Cell arrangement in gram strain: ch, chains; cl, clusters; t, tetrads.. b VAN, vancomycin susceptibility screening test; GAS, gas production in MRS broth; BE, hydrolysis of esculin in the presence of bile; PYR, production of pyrrolidonylarylamidase; LAP, production of leucine aminopeptidase; NaCl, growth in broth containing 6.5% NaCl; 10oC and 45°C, growth at 10°C and 45°C; HEM, hemolytic ...

  2. Example: Escherichia coli Fig: Gram negative bacteria . Bacterial Morphology: Bacteria are very small unicellular microorganisms ubiquitous in nature. They are micrometers (1µm = 10-6 m) in size. They have cell walls composed of peptidoglycan and reproduce by binary fission. Bacteria vary in their morphological features.

  3. E. coli (Escherichia coli), is a type of bacteria that normally lives in your intestines.It’s also found in the gut of some animals. Most types of E. coli are harmless and even help keep your ...

  4. It is routinely used as an initial procedure in the identification of an unknown bacterial species. Let's suppose we have a smear containing mixture of Staphylococcus aureus and Escherichia coli as in previous case. We will use the same stains as before and besides we will need Gram's iodine (strong iodine solution) and alcohol or acetone.

  5. Enterobacter, any of a group of rod-shaped bacteria of the family Enterobacteriaceae. Enterobacter are gram-negative bacteria and are classified as facultative anaerobes. Many species possess flagella and thus are motile. Enterobacter are ubiquitous, and, in humans, multiple species are opportunistic pathogens.

  6. E. coli is a sub-group of fecal coliform bacteria and is largely composed of E. coli (Escherichia coli). Compared to others, E. coli are almost exclusively found in the intestines of warm-blooded animals where they are able to live and reproduce. Although they are mostly harmless in the host's intestines, there are strains of E. coli (e.g. E ...

  7. A: Colonies of Staphylococcus epidermidis on sheep blood agar. Cultivation 24 hours, aerobic atmosphere, 37°C. B: Gamma-hemolytic (non-hemolytic) colonies of Staphylococcus epidermidis on sheep blood agar.

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