How cells can be treated so that the cell contents become more visible?

Cells can be treated with various staining techniques to enhance the visibility of their contents. Common methods include using dyes like methylene blue or hematoxylin and eosin, which selectively bind to cellular components, highlighting structures such as nuclei and cytoplasm. Additionally, fixing agents like formaldehyde can preserve cell morphology, while mounting media can improve contrast under a microscope. These techniques allow for detailed observation of cellular structures and functions.