A. DOWSETT, PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY A. DOWSETT, PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY
Transmission electron micrograph (TEM) of the bacterium Helicobacter pylori (formerly called Campylobacter pyloridis). It is a curved, or spiral, Gram-negative bacilli with flagella at one end (seen here) that make it highly motile. Helicobacter pylori has recently been linked with the formation of stomach ulcers, through observation of the bacterium in biopsy specimens from patients with active chronic gastritis and peptic ulcers. Magnification: x7080 at 6X4.5cm size.
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