Organoids are small, three-dimensional structures that are grown in a laboratory setting to mimic the structure and function of human organs. These miniature organs are typically derived from stem cells or tissue samples and can be used for a variety of research purposes, such as studying disease mechanisms, testing new drug therapies, and personalized medicine. Organoids offer a more accurate representation of human physiology compared to traditional cell cultures, making them a valuable tool for studying complex biological systems and developing new medical treatments.