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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Actinomyces israelii ： ウィキペディア英語版 Actinomyces israelii ''Actinomyces israelii'' is a species of Gram-positive, rod-shaped bacteria within the ''Actinomyces''. Known to live commensally on and within humans, ''A. israelii'' is an opportunistic pathogen and a cause of actinomycosis. Many physiologically diverse strains of the species are known to exist, though all are strict anaerobes.〔Levinson, W. ''Review of Medical Microbiology and Immunology''. 2010:McGraw Hill.〕 ==Pathogenesis== Actinomycosis is most frequently caused by ''A. israelii''. It is a normal colonizer of the vagina, colon, and mouth. Infection is established first by a breach of the mucosal barrier during various procedures (dental, gastrointestinal), aspiration, or pathologies such as diverticulitis. The chronic phase of this disease is also known the "classic phase" because the acute, early phase is often missed by health care providers. This is characterized by slow, contiguous growth that ignores tissue planes and forms a sinus tract that can spontaneously heal and recur, leading to a densely fibrotic lesion. This lesion is often characterized as "wooden". Sulfur granules form in a central purulence surrounded by neutrophils. This conglomeration of organisms is virtually diagnostic of ''A. israelii.'' 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.