Why are human oral epithelial cells stained with iodine when observed using a microscope?

When staining oral epithelial cells, the iodine solution should be diluted.

It is to stain the cells light yellow, making it easier to observe against a transparent background.

For oral cavity staining The iodine solution should be diluted when staining epithelial cells.

The dilute iodine solution is to prevent excessive staining (you need to distinguish the light yellow translucent cytoplasm and dark cell nuclei under the microscope)

It dyes the cells light yellow, making it easier to observe on a transparent background.

When staining oral epithelial cells, the iodine solution should be diluted.

The dilute iodine solution is to prevent Too dark staining. (You need to distinguish the light yellow translucent cytoplasm and the dark nucleus under the microscope)