infectious agent

The infectious agent responsible here was Nocardia, which is known to produce chronic abscessing inflammation.

此处引起感染的因素是诺卡菌属, 主要引起慢性脓肿.

互联网摘选

the way the body recognises an infection is by examining molecules from the infectious agent.

身体以通过对传染因子的分子检查来的方式来识别感染.

互联网摘选

Coxiella burnetii is an obligate intracellular bacterium that multiplies within the phagolysosomes of eukaryotic cells and causes a worldwide zoonotic disease, Q fever. It is an air-borne infectious agent and recognized as an important agent of biological threats.

贝氏柯克斯体是一种专性细胞内寄生菌，为重要人畜共患病Q热的病原体，也是一种重要的生物战剂和生物恐怖剂。

互联网摘选

here too the infectious agent is elusive -- yet incredibly hardy.

然而,人们也仍然未找出感染因子 —— 仍是令人难以想象地困难.

互联网摘选

a parasitic or infectious agent was sought for beriberi and other disease which turned out to be due to completely different aetiologies.

例如，脚气病以及其它疾病病原是由寄生虫或感染性因子导致的，然而，最后证实完全不是。

互联网摘选