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放线菌为人和动物口腔内常居菌群中的主要成员之一。其中粘性放线菌(A.Viscosus)和内氏菌(A.Naeslundii)由于与口腔常见的疾病——龋齿和牙周病关系密切而近年越来越受到重视。
Actinomycetes is one of the main members of the resident population in the oral cavity of humans and animals. Among them, A.Viscosus and A.Naeslundii have drawn more and more attention in recent years because of their close relationship with dental caries and periodontal diseases.