STUDIES ON THE CYTOLOGICAL STRUCTURE OF YEAST: ELECTRON MICROSCOPY OF THIN SECTIONS

Abstract
In ultrathin sections of Saccharomyces cerevisiae, grown on Lindegren'' s presporulation medium and studied with the electron microscope, a cytoplasmic membrane, mitochondria, nucleus, central vacuole, storage granules, and an internal double membrane system are described. The cytoplasmic structures observed resemble closely analogous structures described in thin sections of cells from a variety of other sources.