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SELECTIVE AND DIFFERENTIAL MEDIA

49 SELECTIVE AND DIFFERENTIAL MEDIAS elective and DIFFERENTIAL MEDIA are used to isolate or identify particularorganisms. SELECTIVE MEDIA allow certain types of organisms to grow, and inhibitthe growth of other organisms. The selectivity is accomplished in several example, organisms that can utilize a given sugar are easily screened bymaking that sugar the only carbon source in the medium. On the other hand, SELECTIVE inhibition of some types of microorganisms can be achieved by addingdyes, antibiotics, salts or specific inhibitors which affect the metabolism orenzyme systems of the organisms.

Cultures of: Staphylococcus aureus Staphylococcus epidermidis Escherichia coli Enterobacter aerogenes Salmonella enteritidis 2. Petri dishes of Mannitol Salt agar, EMB agar, MacConkey’s agar and nutrient agar Procedure: (work in pairs) 1. Divide each plate of MSA and MacConkey’s agar into two sections. Divide the EMB agar plate into three ...

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SELECTIVE AND DIFFERENTIAL MEDIA - …

fire.biol.wwu.edu

50 EOSIN METHYLENE BLUE AGAR (EMB agar) Eosin methylene blue agar is a differential medium used for the detection and isolation of Gram-negative intestinal pathogens. A combination of eosin and

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Grand Canyon of the Colorado - OpenWebMail

fire.biol.wwu.edu

2 The Grand Canyon, one of the deepest canyons in the world with a depth of 1 mile (1.6 km), can be seen in this spectacular photograph taken from the space shuttle.

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Lecture Notes for Biology 101: An Introduction to Science ...

fire.biol.wwu.edu

Lecture Notes for Biology 101: An Introduction to Science and Biology for Non-Majors Instructor David L. Alles ... coherent picture of life on Earth. Because life on Earth is an effectively closed historical system, we must understand that biology is an historical science. One result of …

  Lecture, Notes, Earth, Introduction, Sciences, Biology, Lecture notes for biology 101, An introduction to science

Mutation or polymorphism? - OpenWebMail

fire.biol.wwu.edu

Mutation or polymorphism? 20/3/03. BY RICHARD TWYMAN Welcome trust ... In Caucasian populations this is a rare sequence variant of the beta-globin gene that causes a severely debilitating blood disorder. In certain parts of Africa, however, the same allele is polymorphic because it confers resistance to the ...

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The Evolution of the Universe - OpenWebMail

fire.biol.wwu.edu

the evolution of the universe. The four key observational successes of the model are: The Expansion of the Universe Nucleosynthesis of the light elements Origin of the cosmic background radiation Formation of galaxies and large-scale structure The Big Bang model makes accurate and scientifically testable hypotheses in each of these ...

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BACTERIAL EXAMINATION OF WATER - OpenWebMail

fire.biol.wwu.edu

83 FIRST PERIOD Material: 1. Nine tubes of double-strength lactose broth 2. 10, 1.0 and 0.1 ml pipets 3. Water samples Procedure: (work in groups of four) Presumptive Test 1. Take a water sample (dilute as instructed in some cases) and inoculate three

  Bacterial, Tests, Water, Examination, Bacterial examination of water

10 things you can do to help biodiversity - en US.ISO8859-1

fire.biol.wwu.edu

Figure 1. Biodiversity is threatened by a variety of global changes resulting from the combined actions of human society. The most direct threats are overharvesting and loss/disturbance of

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ISOLATION OF PURE CULTURES

fire.biol.wwu.edu

Exposure of sterile media to the environment will demonstrate the importance of aseptic technique. 1. Label two nutrient agar plates as "Exposure I" and "Exposure II." 2. Uncover the plate marked "Exposure I" and allow it to remain exposed in the lab for about 5 minutes. 3. Expose the plate marked "Exposure II" to a source of possible contaminants.

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Lecture Notes for Biology 101: An Introduction to Science ...

fire.biol.wwu.edu

The purpose of Part Three is to show how biological knowledge can be integrated into a ... prescriptive statements are statements of ... Reformation with the rejection of the authority of the Catholic Church. 3) Prediction by itself is insufficient to …

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Comparing the size of a virus, a bacterium, and a ...

fire.biol.wwu.edu

Mites Vertebrates Soil Birds Cattle Control rats, proper sanitation Control rats, vaccinate Control mites Control rodents, vaccinate domestic animals Sterilize wool, hair, other animal products Control bird imports Vaccinate animal handlers MICROBIAL LIFE , Table 30.1 (Part 4) Sinauer Associates, Inc. Table 30.1 Disease

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Chapter 2: Hazards - Biological, Chemical and Physical

seafoodhaccp.cornell.edu

• Staphylococcus aureus — enterotoxin ... borne infections are caused by swallowing live pathogens that grow within the body, usually in the intestinal tract. They differ from food-borne intoxication, which is a condition caused by swallowing preformed toxins ... • Pathogenic Escherichia coli (e.g., E. coli 0157:H7)

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14 Hospital hygiene and infection control

www.who.int

nella or Shigella spp., Escherichia coli O157:H7, or other pathogens may be present in the food and cause an outbreak of disease just as they can in a community outside the hospital. If the water distribution system ... A typical example is Staphylococcus aureus, which may be carried in the nasal passages of 30—60% of personnel.

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Kirby-Bauer Disk Diffusion Susceptibility Test Protocol

asm.org

are Staphylococcus aureus ATCC 25923 (Biosafety level (BSL) 2), Escherichia coli ATCC 25922 (BSL 1), and Pseudomonas aeruginosa ATCC 27853 (BSL 2) (www.atcc.org), as the zone of inhibition for these organisms is known. Because the zone sizes are known for these organisms, they are recommended for use in the educational

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Urinary Tract Infections - Columbia University

www.columbia.edu

MID 11 pathogenicity. Among Gram positive organisms, in contrast, Staphylococcus aureus uncommonly causes cystitis and ascending pyelonephritis, whereas Staphylococcus saprophyticus, which adheres significantly better to uroepithelium than do Staphylococcus aureus or Staphylococcus epidermidis, is a frequent cause of lower urinary tract infections.

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National Infection Service

assets.publishing.service.gov.uk

aureus antibodies (antistaphylolysin and anti- nuclease) services withdrawn Oct 2015. Various 6 November 2016 5, 8, 31, 49, Update Key personnel, medicolegal, summary of contacts, service table and appendixes for TATs, BIDS, Escherichia, Listeria, Neisseria Shigella, Streptococcus and Cronobacter. Add Abiotrophia, Aerococcus, Actinomycetes,

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Surgical Site Infection (SSI)

www.cdc.gov

escherichia coli amk s i r n amp s i r n ampsul/amxclv s i r n azt s i r n cefaz s i r n ceftaz s i r n cefot/ceftrx s i r n cefep s i/s-dd r n ceftavi s r n ceftotaz s i r n cipro/levo/moxi † s i r n col/pb i r n dori/imi/mero s i r n doxy/mino/tetra s i r n erta s i r n gent s i r n imirel s i r n mervab s i r n piptaz s i r n tig s i r n ...

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