Several staining techniques are employed to highlight different cellular components. The most common is Hematoxylin and Eosin (H&E) staining, which provides a general overview of tissue architecture. Immunohistochemistry (IHC) is another critical technique that uses antibodies to detect specific proteins, aiding in the identification of cancer subtypes. Special stains like Periodic Acid-Schiff (PAS) and Masson's Trichrome are also used for identifying specific tissue components.