A bacterium is identified as the cause for his duodenal ulcer.
一种细菌被断定为造成他十二指肠溃疡的根源。
An organism, such as a bacterium, requiring oxygen to live.
好氧菌需要氧气生存的有机体, 例如细菌
A protein substance produced in the blood or tissues in response to a specific antigen, such as a bacterium or a toxin. Antibodies destroy or weaken bacteria and neutralize organic poisons, thus forming the basis of immunity.
抗体, 免疫体血液或组织针对某种抗原如细菌或毒素而产生的蛋白质物质。抗体消灭细菌或削弱其作用, 中和有机毒素, 因而形成免疫力