Tissue culture is a laboratory technique used to grow cells, tissues, or organs in a controlled environment outside of their natural setting. This method allows scientists to study the growth, development, and behavior of cells in a way that is not possible in living organisms. It is commonly used in fields like plant biology, medicine, and genetics. In tissue culture, small pieces of tissue are placed in a nutrient-rich medium that provides the necessary conditions for growth. This technique is essential for producing clonal plants, studying diseases, and developing vaccines, as it enables researchers to manipulate and analyze biological materials effectively.