Cell suspension culture is a technique used in cell biology where cells are grown in a liquid medium rather than on solid surfaces. This method allows for the growth of cells in a free-floating state, making it easier to study their behavior, metabolism, and interactions. It is commonly used for various applications, including drug testing and vaccine production. In a cell suspension culture, cells are typically derived from tissue culture or cell lines and are maintained in a nutrient-rich solution. This environment provides essential nutrients, growth factors, and gases, promoting cell proliferation and viability. The technique is essential for large-scale production of cells for research and industrial purposes.