- 幽门螺旋杆菌 yōuménluóxuángǎnjūn Helicobacter pyloriHelicobacter pylori, a type of bacterium that can infect the stomach and cause ulcers
- 幽门螺旋菌 yōuménluóxuánjūn Helicobacter pyloriHelicobacter pylori; a type of bacterium found in the stomach
- 幽门螺杆菌 yōuménluógǎnjūn Helicobacter pyloriHelicobacter pylori; a species of bacteria that inhabits the stomach and can cause ulcers or gastritis
