Abstract

Four different human isolates of Microsporum canis, Trichophyton mentagrophytes, T. rubrum, T. tonsurans and Epidermophyton floccosum were cultured for 14 days in Sabouraud's medium at room temperature. The non-dialyzable proteins of the culture filtrates were fractionated by disc electrophoresis. The number and electrophoretic mobility of the protein fractions of the 4 isolates of each species were very similar. Interspecific electrophoretic differences, however, werepresent. Some variations in optical densities of homologous fractions were observed within each species. These data suggest that the qualitative electrophoretic patterns of these species are relatively stable taxonomic characteristics.

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