How stain yeast?

To stain yeast, you can use a methylene blue solution, which is effective for highlighting live and dead cells. Simply prepare a slide with a small amount of yeast mixed with the dye, incubate for a few minutes, and then observe under a microscope. Live yeast cells will remain colorless or light blue, while dead cells will take on a darker blue color. This method helps differentiate between viable and non-viable yeast cells.