Related topics: inflammatory bowel disease

Bacteria adapt syringe apparatus to changing conditions

Some of the best-known human pathogens—from the plague bacterium Yersinia pestis to the diarrhea pathogen Salmonella—use a tiny hypodermic needle to inject disease-causing proteins into their host's cells, thereby manipulating ...

Acidic environment could boost power of harmful pathogens

When food we've swallowed reaches our stomachs, it finds an acidic environment. The low pH in the stomach helps to begin digestion—and has been thought to kill the bacteria that hides in food that otherwise could harm our ...

480-million-year-old fossils reveal sea lilies' ancient roots

Sea lilies, despite their name, aren't plants. They're animals related to starfish and sea urchins, with long feathery arms resting atop a stalk that keeps them anchored to the ocean floor. Sea lilies have been around for ...

page 1 from 6