Diagnostic methods, chemical, bacteriological and microscopical : a text-book for students and practitioners . ^ Fig. 66.—Hair showing trichophyton endo-ectothryx X 900. PARASITES. 159 (4). Microsporon parasite is readily recognized by the microscopic examination of thescales scraped from the skin. Innumerable clustered spores, highly refractiveand resembling in their circular and oval contours droplets of oil, are quitecharacteristic. The mycelial threads are not usually branched, but lie in aclose network, among which sporophores are distinguishable, with conidiaand terminal eler
Diagnostic methods, chemical, bacteriological and microscopical : a text-book for students and practitioners . ^ Fig. 66.—Hair showing trichophyton endo-ectothryx X 900. PARASITES. 159 (4). Microsporon parasite is readily recognized by the microscopic examination of thescales scraped from the skin. Innumerable clustered spores, highly refractiveand resembling in their circular and oval contours droplets of oil, are quitecharacteristic. The mycelial threads are not usually branched, but lie in aclose network, among which sporophores are distinguishable, with conidiaand terminal elerhents emerging at one extremity of the spore case. Bothelements of this organism are more readily stained by the aniline dyes than arethose of the trichophyton or favus. This organism is the cause of the con-dition known as tcenia Fig. 67 —Hair showing microsporon audouini X 900. (5). Microsporon minutissimum. This organism is the etiologic factor of erythrasma. It is characterizedby the extreme delicacy and fineness of its threads and very minute threads are either simple, cylindrical bodies of variable size or theymay exhibit partition septa, may divide dichotomously, and may terminatein hooked or knobbed expansions. The largest transverse diameter is , in length the mycelium presents the greatest variations. (6). Blastomycetes. These organisms may be found in the cutaneous eruptions of the skinin blastomycosis and may be described as follows, according to Montgomeryand Ormsby. In unstained preparation the organisms appear as round or ovalbodies with a double-contoured highly refractive capsule. Within the capsule,in many instances, granules or spore-like bodies can be distinguished. The i6o DIAGNOSTIC METHODS. addition of a i to lo per cent, solution of potassium hydrate to the specime
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