Medical Dictionary: Bacterium
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Bacterium: Another name for Bacterial diseases.
Bacterium (condition): Any condition caused by bacteria.
Bacterium (condition): Bacteria are single-celled creatures with tiny flagella. Bacteria are alive. They are very small organisms, often only a single cell. Bacteria need to get energy, and may emit toxins or waste products. By comparison, viruses are much smaller, and are not exactly "alive" in the normal sense.
Bacterium: Microbes belonging to the bacteria group
are made up of only one cell. Under a microscope,
bacteria look like balls, rods, or spirals. Bacteria are so small that a
line of 1,000 could fit across the eraser of a pencil. Life in any form on
Earth could not exist without these tiny cells.
More information on medical condition: Bacterial diseases:
1. excerpt from Microbes in Sickness and in Health - Publications, National Institute of Allergy and Infectious Diseases: NIAID
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