Science Source Stock Photo - E. coli conjugation, TEM

E. coli conjugation, TEM

Description: Colored transmission electron micrograph (TEM) of E. coli strains undergoing conjugation via a pilus. Bacterial conjugation is the ability to transfer DNA between strains of bacteria (via a pilus). It allows a new mutation to spread through an existing population. It is believed that this process led to the spread of toxin synthesis from Shigella to E. coli (0157:H7). Escherichia coli is a Gram-negative, facultatively anaerobic, enteric, rod prokaryote. This bacterium was isolated from the human intestine and is normally a part of the human and animal microbiota. Most E. coli strains are harmless, but some strains can cause serious problems such as: food poisoning, urinary tract infections, traveler's diarrhea and nosocomial infections. The E. coli 0157:H7 strain is fatal to humans if contracted when contaminated meat is cooked inadequately. Magnification: x3,755 when shortest axis printed at 25 millimeters.

Credit:

Dennis Kunkel Microscopy/Science Source

Unique identifier: SS2786360

Legacy Identifier: TA2359

Type: Image

Size: 4675px × 5904px (~78 MB)

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