Fine Structure of the Endomembrane System in the Dermatophytic FungusTrichophyton Mentagrophytes

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Abstract
When employing usual and unusual fixation procedures, all the components of the endomembrane system of the apical cells of Trichophyton mentagrophytes were detectable. The membranous structures having a direct continuity or a developmental interaction are the endoplasmic reticulum, nuclear envelope and cytoplasmic vesicles. Occasionally an intimate association between endoplasmic reticulum and plasmalemma was also demonstrated. The vesicles appear to be of two types: secretory vesicles, which are concentrated in the expanding apices; and provacuoles which inflate and fuse together, creating vacuoles. It is suggested that all the cytoplasmic vesicles may be included in the category of primary lysosomes.