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... relationship bewteen Salmonella and indicator bacteria. It has been found that the Salmonella survived better in water than the coliform bacteria '', while 6X9 have noted greater persistence of the indicator bacteria especially the coliforms. However, the results of these studies are difficult to co ...
group 12 - Google Groups
group 12 - Google Groups

... Molecular mimicry of host’s tissues e.g. Streptococcus pyogenes in rheumatic fever. They resemble the genetic or chemical make-up of part of the body, making the body evoke an immune response against itself. ...
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... Colonization. Some virulent bacteria produce special proteins that allow them to colonize parts of the host body. Helicobacter pylori is able to survive in the acidic environment of the human stomach by producing the enzyme urease. Colonization of the stomach lining by this bacterium can lead to Gas ...
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A1985ANC2900001

... the broth dilution method. A number of antibiotic disk-diffusion procedures came into use, most of which were unstandardized and employed a variety of media, inocula, disk contents, and end-point criteria. One approach was to determine the presence or absence of growth of the test organism on an aga ...
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... phagosome. Thus, a cellular compartment that should be a death trap instead becomes a nursery. Eventually, the cell is destroyed, releasing a new generation of microbes to infect other cells. The symptoms of Legionella infection undoubtedly result from a combination of physical interference with oxy ...
Chapter 27: Bacteria and Archaea
Chapter 27: Bacteria and Archaea

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... the tube. Then, when the wand is replaced, air becomes trapped in the tube. Since the air is then trapped within the tube, the bacteria begin to grow inside if it. Mascara tubes also often provide a humid environment, from the mixture of incoming air and moisture within the mascara itself. This is a ...
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... • The domains Bacteria and Archaea consists of single-celled organisms. These two domains consist of the oldest forms of life on Earth. • The Shape of Bacteria Bacilli are rod shaped. Cocci are spherical. Spirilla are long and spiral shaped. Each shape helps bacteria in a different way. ...
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... Some antibiotics, such as those in the penicillin group, work by inhibiting cell wall synthesis. Penicillins work better on Gram-positive bacteria due to the thicker cell wall in Gram-positive bacteria as well as the reduced ability of penicillin to cross the Gram-negative cell wall. Penicillin deri ...
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... negative rods ( bacilli ) whose natural habitat is the intestinal tract of human and animals . The family includes many genus ( Escherichia, Shigella , Salmonella, Enterobacter , Klebsiella, Proteus and others ). referred to as "enteropathogenic bacteria" or enteric bacilli or simply enteric these i ...
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Fighting Back

... soaps and nearly 30% of bar soaps…contained some type of antibacterial agent. Nearly half of all commercial soaps studied contained Triclosan” (qtd. in Glaser 13). Because this chemical is present in so many consumer goods and household items, mutated bacteria become immune to its effects, and resea ...
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Bacterial morphological plasticity

Bacterial morphological plasticity refers to evolutionary changes in the shape and size of bacterial cells. As bacteria evolve, morphology changes have to be made to maintain the consistency of the cell. However, this consistency could be affected in some circumstances (such as environmental stress) and changes in bacterial shape and size, but specially the transformation into filamentous organisms have been recently showed. These are survival strategies that affect the bacterial normal physiology in response for instance to innate immune response, predator sensing, quorum sensing and antimicrobial signs.
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