Biological preservation refers to methods used to maintain the viability and integrity of biological materials, such as cells, tissues, and organs. This process is essential in fields like medicine and biotechnology, where preserving samples can aid in research, transplantation, and drug development. Techniques include refrigeration, freezing, and the use of cryoprotectants to prevent damage during storage. One common application of biological preservation is in the banking of stem cells and sperm, which can be stored for future use. Additionally, biobanks collect and preserve biological samples for research purposes, helping scientists study diseases and develop new treatments.