Immunological Studies on Dermatophytes II. Serological Reactivities of Mannans Prepared from Galactomannans I and II of Microsporum quinckeanum, Trichophyton granulosum, Trichophyton interdigitale, Trichophyton rubrum, and Trichophyton schoenleinii

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The contribution of terminal galactofuranose residues to the antigenic specificity and to cross-reactivity of galactomannans isolated from five species of dermatophytes, Microsporum quinckeanum, Trichophyton granulosum, T. interdigitale, T. rubrum, and T. schoenleinii, was investigated. Galactofuranose units were removed from galactomannans I and galactomannans II by mild acid hydrolysis. The resulting mannans were tested for serological reactivity with rabbit antiserum to M. quinckeanum by qualitative precipitation in gel and by quantitative complement-fixation analyses. Our results showed that, with this antiserum, the galactofuranose residues contributed greatly to the antigenic specificity and to cross-reactivity of the galactomannans II, but these residues were less significant as antigenic determinants in the galactomannans I. We have shown that mannans isolated from three Candida species reacted with rabbit antiserum to M. quinckeanum.

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