Studies on the cytology of yeast-cells

II. Research on the process of mitosis by electron- microscopy

Abstract

1. In Saccharomyces cerevisiae the chromonemata and chromatin-granules are observed in the chromosome by electron-microscope.
2. At metaphase the nucleus changes to the spindle directly or the intranuclear spindle appears in the nucleus.
3. The spindle-fibers are recognized in the spindle at metaphase.