Pathogen

A pathogen literally "birth of pain" from the Greek παθογένεια) is a biological agent that can cause disease to its host. A synonym of pathogen is "infectious agent".

Related Topics:
Greek - Biological agent - Disease - Host - Infectious

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The term "pathogen" is most often used for agents that disrupt the normal physiology of a multicellular animal or plant. However, pathogens can infect unicellular organisms from all of the biological kingdoms (see Viruses, below).

Related Topics:
Physiology - Multicellular - Biological kingdoms - Viruses

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