There are about 120 species of frogs belonging to the genus Phyllobates, including the posion dart frog, that can secrete a ...

Choose from Tummy Discomfort stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else. Video Back Videos home Signature collection Essentials ...

Helicobacter pylori (H. pylori) is a type of bacteria associated with peptic ulcers. The infection is hard to treat and causes symptoms of gastritis (stomach inflammation), characterized by abdominal ...