Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . WM Fig. 66.—Hair showing trichophyton endo-ectothryx, X 900. PARASITES. 169 and terminal elements 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 tinea versicolor. (5). Microsporon organism is the etiologic factor of erythrasma. It is characterizedby the extreme delicacy and fineness of its threads an
Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . WM Fig. 66.—Hair showing trichophyton endo-ectothryx, X 900. PARASITES. 169 and terminal elements 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 tinea versicolor. (5). Microsporon 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 Fig. 67.—Hair showing microsporon audouini, X 900. (6). Blastomycetes. These organisms may be found in the cutaneous eruptions of the skin in blastomycosis and may be described as follows, according to Montgomery and Ormsby. In unstained preparation the organisms appear as round or oval bodies with a double-contoured highly refractive capsule. Within the capsule, in many instances, granules or spore-like bodies can be distinguished. The addition of a i to 10 per cent, solution of potassium hydrate to the specimen under examination facilitates the recognition of these bodies. In stained sections the double contoured, homogeneous capsule is usually separated from a finely or coarsely granular protoplasm by a clear space of varying width. Vacuoles of different sizes are found in some organisms. In both pus and tissue, organisms in pairs or in various stages of budding are commonly seen.^ The * See Whitman, Jour. Infect. Dis., 1913, XIII, 85. See a long series of articles by variousauth
Size: 1392px × 1795px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublis, booksubjectdiagnosis
