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Bacterial Cultures |
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| Colonies of the bacteria known as Escherichia coli (larger, pink) and Proteus vulgaris (smaller, brown) grow side by side in this petri dish culture. Under normal circumstances both of these bacteria harmlessly inhabit the human intestines and aid in digestion, but can become pathogenic and cause infections, such as urinary tract infections. Scientists and doctors grow cultures of bacteria and study their characteristics in order to learn about bacterial diseases and disease prevention. | ||||||
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| John Durham/Photo Researchers, Inc. | ||||||
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| Appears in these articles: | ||||||
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| Bacteria; Bacteriology; Weed Control | ||||||
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