Helicobacter pylori bacteria, coloured scanning electron micrograph (SEM). H. pylori is a Gram-negative spiral-shaped bacterium found in the mucus lining of the stomach. It causes gastritis, and is also the most common cause of stomach ulcers. It may also be a cause or co-factor for gastric cancer as its presence increases the risk of developing stomach tumours.
✯ Blood clot removed from an occluded artery. Red blood cells (erythrocytes) are trapped within a fibrin protein mesh (blue). Clots are formed in response to cardiovascular disease or injuries to blood vessels.✯
Scanning Electron Micrograph | Mycobaterium tuberculosis | the bacteria that cause TB | Tuberculosis, commonly known as TB, is a contagious and an often severe airborne disease caused by a bacterial infection. TB typically affects the lungs, but it also may affect any other organ of the body. It is usually treated with a regimen of drugs taken for 6 months to 2 years, depending on the type of infection.