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47.3 MB (3.7 MB compressed)
4710 x 3509 pixels
39.9 x 29.7 cm ⏐ 15.7 x 11.7 in (300dpi)
MOREDUN ANIMAL HEALTH LTD / SCIENCE PHOTO LIBRARY MOREDUN ANIMAL HEALTH LTD / SCIENCE PHOTO LIBRARY
False-colour transmission electron micrograph of the bacteria Salmonella typhimurium in the early stages of division. A Gram-negative flagellate. S. typhimurium is a major cause of food poisoning (salmonellosis) in humans. Salmonella bacteria are transmitted in food. Infections are common in poultry & eggs. Inadequately cooked pork & beef are also potential sources. Oysters farmed near sewage outlets may become contaminated with faecal bacteria. Rats & mice are also common carriers. Clinical symptoms are headache, fever, abdominal pain & diarrhoea. Magnification: x12,500 at 35mm size.
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