Cell preservation refers to the techniques used to maintain the viability and functionality of cells for future use. This process is essential in various fields, including medicine, research, and biotechnology. Common methods of cell preservation include freezing, drying, and using cryoprotectants, which help protect cells from damage during storage. The most widely used technique is cryopreservation, where cells are cooled to very low temperatures to halt metabolic processes. This method is crucial for preserving stem cells, sperm, and embryos for fertility treatments and research. Proper cell preservation ensures that valuable biological materials remain viable for extended periods, facilitating advancements in science and medicine.