The ultrastructure of Pityrosporum pachydermatis.

Abstract

The purpose of the present work was to make a thorough study of the ultrastructure of yeasts Pityrosporum pachydermatis under transmission electron microscope. The study revealed an additional layer, that has not been described so far, situated outside the cell wall. Because its presence could be proved exclusively in the specimens prepared by means of a method which permits minimal washing out of lipids from biological material (dehydration by means of hexylene glycol and immersion in the resin of low viscosity), one can assume, that lipids are one of the components of this outer layer and they bind its structure together.