What role does Hematoxylin stain play in the visualization of tissue structures in pathology?

Hematoxylin stain plays a critical role in the visualization of tissue structures by binding to acidic components, such as nucleic acids, and providing a blue or purple color to cell nuclei. When used in combination with Eosin stain, which stains cytoplasmic components pink, it offers a comprehensive view of tissue architecture. This contrast is essential for distinguishing various cell types and identifying abnormalities, enabling pathologists to diagnose diseases accurately, conduct research, and teach histological and pathological analysis.