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Enteritis is usually caused by eating or drinking substances that are contaminated with bacteria or viruses. The germs settle in the small intestine and cause inflammation and swelling, which may lead to abdominal pain, cramping, diarrhea, fever, ...
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Radiation enteritis occurs because the large and small intestines are sensitive to all forms of ionizing radiation. Some areas of the gastrointestinal tract are more sensitive to radiation than others; the colon is more sensitive to the effects o...
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Bacteria are prokaryotes(unicellular organisms with no membrane-enclosed nucleus) with simple structures that typically range in size from about 0.5 to 20 micrometers.Bacteria are named according to the binomial(two-name) system of nomenclature fi...
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The bacterium Heliobacter pylori is the only one that can survive inside the human stomach. It causes gastritis and ulcers, but is generally treatable with a combination of antibiotics.
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A virus is an infectious agent, often highly host-specific, consisting of genetic material surrounded by a protein coat.Viruses infect virtually every life form, including humans, animals, plants, fungi, and bacteria. So small that they cannot be ...
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Viruses are familiar from the common diseases they cause: colds and flu, for instance. But what are they, and how do they cause sickness?
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