Organ culture is a way to grow and study cells and tissues from an animal or human body outside of their normal body environment. Scientists can do this in laboratories by placing pieces of the organ, like a heart, liver, kidney, or muscle, into a special mixture of chemicals, antibiotics, and nutrients that help the tissue grow. This is especially useful for studying how organs and cells react to drugs, medicines, and new treatments. The organ culture can be used to test how safe and effective a certain treatment is so it can be used in people.