Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - A to Akutagawa, Ryunosuke

Actinomycosis

usually

Actinomycosis, chronic infectious disease caused by Actinomyces israeli, a microorganism often (and usually harmlessly) present on the gums, tonsils, and teeth. The characteristic lesion is a hard area of multiple small communicating abscesses surrounded by granulation tissue. Other similar bacteria are usually also present.

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