This service involves the meticulous preparation of tissue samples for microscopic examination by embedding them in paraffin wax. The process typically includes several steps: fixation (often with formalin) to preserve cellular structure, dehydration through a series of increasing alcohol concentrations to remove water, clearing with a solvent like xylene to remove alcohol, infiltration with molten paraffin wax, and finally, embedding the tissue in a solid paraffin block. This technique is fundamental in histopathology and research, providing structural support for thin sectioning, enabling long-term storage of tissue blocks at room temperature, and allowing for various staining procedures. Formalin-fixed paraffin-embedded (FFPE) tissues are widely used for disease diagnosis, studying tissue morphology, and research applications.