Gram staining is one way scientists can identify bacteria. Gram-positive bacteria, such as Staphylococcus, appear blue or purple under a microscope when scientists apply a stain. Conversely, ...

Bacterial skin infections occur when bacteria enter through the surface of the skin. They can cause symptoms such as swelling and inflammation. Treatment may include topical or oral antibiotics.

Antibiotic resistance has become a growing problem. When bacteria become antibiotic-resistant, treatment options become limited. Carbapenems are effective antibiotics that work on a wide range of ...

A type of bacteria that causes dental plaque may be behind a treatment-resistant form of colorectal cancer, a study published Wednesday in the journal Nature found. The particular bacterium, which ...

A toxin produced by bacteria found in dirty water kills off immune cells in the lining of the colon, meaning people whose guts are colonised by these bacteria are much more likely to develop a ...

Colon cancer is the second-leading cause of cancer deaths in the United States and is expected to kill more than 53,000 people in the nation in 2024, according to the American Cancer Society. Rates ...