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File:IPLab9Actinomycosis5.jpg|This is a high-power photomicrograph of an actinomycotic colony. The filamentous nature (arrows) of the actinomyces organisms is more easily appreciated at this power.
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== Study Questions ==
* <spoiler text="These organisms are ubiquitous in the environment but they seldom cause disease. Why?">Actinomyces requires an anaerobic environment deep within tissue to flourish. As a non-invasive bacterium, the Actinomyces organisms must be introduced into these deep tissues before causing harm.</spoiler>
{{IPLab 9}}
[[Category: IPLab:Lab 9]]
