作者从5例口腔内损害中发现了放线菌。放线菌是口腔内的常见微生物,存在于牙菌斑、龋齿、结石和扁桃体隐窝等处,一般较少起致病菌作用。本病除了以色列氏放线菌属外,近来也对乃司伦第氏(naeslundii)放线菌的致病作用引起了注意。以色列氏放线菌为厌氧菌,因此本病的发生与发病以前所 The authors found actinomycetes from 5 cases of oral lesions. Actinomycetes is a common oral microorganism, existing in dental plaque, dental caries, stones and tonsil crypts, etc., generally less pathogenic bacteria. In addition to the Actinomyces spp., This disease has also recently attracted the attention of the causative role of actinomycetes, naeslundii. Actinomyces is an anaerobic bacteria, so the occurrence and onset of the disease previously