Kane J, Sigler L, Summerbell R C
Ontario Ministry of Health Laboratory Services Branch, Toronto, Canada.
J Clin Microbiol. 1987 Dec;25(12):2449-52. doi: 10.1128/jcm.25.12.2449-2452.1987.
Microsporum persicolor, a zoophilic dermatophyte species, is seldom recorded causing human infections in North America. Its identification has been enhanced as a direct result of the development of improved techniques for its characterization. Identifying characteristics include induction of rough-walled macroconidia on sodium chloride-amended medium, absence of good growth at 37 degrees C, and absence of a pH change during growth on casein glucose medium. In contrast, Trichophyton mentagrophytes, a species commonly confused with M. persicolor, has smooth-walled macroconidia, grows well at 37 degrees C, and produces an alkaline reaction on casein glucose medium.
变色小孢子菌是一种亲动物性皮肤真菌，在北美很少有引起人类感染的记录。由于改进了其鉴定技术，它的识别得到了加强。识别特征包括在添加氯化钠的培养基上诱导产生粗糙壁大分生孢子，在37摄氏度时生长不佳，以及在酪蛋白葡萄糖培养基上生长期间pH值无变化。相比之下，须癣毛癣菌是一种常与变色小孢子菌混淆的菌种，它有光滑壁大分生孢子，在37摄氏度时生长良好，并且在酪蛋白葡萄糖培养基上产生碱性反应。
