Electron Microscope Studies of Nuclear Changes inSaccharomyces CerevisiaeDuring Bud Formation

Abstract
Ultraviolet photolysis was used to obtain transparent yeast cells when observed with the electron microscope. Following proper irradiation the yeast nucleus was easily discernable and appeared to be in various stages of division. Spindle-like figures were seen which give weight to the concept of a mitotic process for the division of the yeast nucleus. Distinct chromosomes were not observed.