Frederick Griffith Biography Frederick Griffith (1879-1941)‚ who was born in Hale‚ Cheshire County‚ England and who attended the Liverpool University‚ was a British bacteriologist whose focus was the epidemiology and pathology of bacterial Pneumonia. In January‚ 1928 he reported what is now known as Griffiths Experiment‚ the first widely accepted demonstration of bacterial transformation‚ where a bacterium distinctly changes its form and function. Griffith succumbed to his death around the year
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Alexander Fleming Webster Heming Kaplan University Alexander Fleming Description Alexander Fleming was a botanist‚ pharmacologist‚ and biologist from Scotland. He made various contributions to the medical fields of chemotherapy‚ immunology‚ and bacteriology. He is best known for discovery of penicillin and the lysozyme enzyme. He won a Nobel Prize in the field of medicine in 1928 for discovery of penicillin. He shared the prize with two other scientists. The discovery
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Bacterial Diseases of Fish by Robert B. Moeller Jr.‚ DVM California Animal Health and Food Safety Laboratory System University of California Aeromonas hydrophila (Bacterial Hemorrhagic Septicemia) 1. Gram negative motile rods 2. Effects many freshwater species and usually is associated with stress and overcrowding. 3. The clinical signs and lesions are variable. The most common finding is hemorrhage in skin‚ fins‚ oral cavity and muscles with superficial ulceration of the
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HUMAN ENVIROMENTAL HAZORDS 1 Human Environmental Hazards HUMAN ENVIROMENTAL HAZORDS 2 Human Environmental Hazards The four major categories of human environmental hazards are Cultural Hazards‚ Biological Hazards‚ Physical Hazards‚ and Chemical Hazards.
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1. Ceftriaxone Sodium 1g IV Fig. 1.1 Ceftriaxone (Rocephin) It inhibits the cell wall synthesis promoting osmotic instability‚ usually bactericidal. It hinders or kills bacteria. Ceftriaxone sodium is a broad-spectrum bactericidal cephalosporin antibiotic. Ceftriaxone is active in vitro against a wide range of Gram-positive and Gram-negative organisms‚ which include β-lactamase producing strains. Ceftriaxone is indicated in the treatment of the following infections either before the infecting
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What is the infectious agent (pathogen) that causes this infectious disease? Hepatitis A is cause by the Hepatitis A virus. The Hepatitis A virus causes an inflammation of the liver. Hepatitis Immunization‚ Havrix‚ VAQTA. Hepatitis is an acute infectious disease that can harm the liver. Several diseases of the liver‚ collectively known as hepatitis‚ are caused by viruses. The viruses involved‚ five of which have been reasonably well characterized‚ come from a wide range of virus families. Hepatitis
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Staphylococcus epidermidis is one of the most prevalent microorganisms found on the human skin and in the mucous membranes‚ however‚ it is a typically overlooked bacterium because there is very little that is known about it. Though it is not as aggressive as its cousin Staphylococcus aureus‚ Staphylococcus epidermidis is the most frequent cause for nosocomial pathogens‚ especially among newborns‚ the elderly‚ and anyone who has a compromised immune system. These infections are usually associated
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Unknown Microorganisms May 1‚ 2013 This paper is based on an experiment done in the laboratory over a period of time using the standard method of identifying an unknown microorganism relying on features such as morphology‚ arrangements and biochemical reactions. It was done in succession with each step complimenting the other. At the end of the experiment three microorganisms Bacillus azotoformans‚ Staphylococcus aureus‚ and Escherichia coli was identified and one result was inconclusive. The
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19th Century Medicine Robert Koch (1834) Koch worked on anthrax and tuberculosis (TB) and developed work of Louis Pasteur. Koch first investigated Anthrax (that affected herds of farm animals and farmers.) In 1868 Davaine had proved that a healthy animal that did not have anthrax could get the disease if it was injected with blood containing Anthrax. Koch developed this work further. Koch found out that Anthrax microbes produced spores that lived for a long time after an animal had died and these
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The Journey from Spontaneous Generation to Biogenesis Redi‚ Leeuwenhoek‚ Needham‚ Spallanzani‚ and Pasteur changed the way we think about life by trying to prove and disprove Spontaneous Generation or the idea that life could arise from nonliving matter. Redi disproved Spontaneous Generation. He only believed in Biogenesis which is that all life comes from life. Needham believed in Spontaneous Generation and wanted to prove it. Spallanzani wanted to know what caused microbes. Pasteur put an end
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