Tissue staining is a laboratory technique used to enhance the visibility of specific structures within biological tissues. By applying various dyes or stains, researchers can highlight different components, such as cells, nuclei, or extracellular matrix, making them easier to observe under a microscope. This process is essential for studying tissue morphology and identifying abnormalities. Different staining methods exist, including hematoxylin and eosin (H&E) staining, which is commonly used in histology. Each stain has unique properties that target specific tissue elements, allowing for detailed analysis. Tissue staining plays a crucial role in medical diagnostics, research, and education.